An international student works delivering food in between school and applying for office jobs; he runs into familiar faces as he bikes around the city, trying to save up for his girlfriend's arrival, but the odds keeping stacking up against him.

Leonard decides to run against Sheldon for president of the tenants' association; Bernadette encourages Wolowitz and Koothrappali to find the owner of a drone after they find it in the backyard.

Neville confronts Jackie about loaning Dan money; Darlene attempts to play matchmaker for Mark.

Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy; Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work.

Penny gets the opportunity to host Bill Gates at work when his company wants to partner with hers; Leonard, Koothrappali and Wolowitz do everything in their power to meet him; Sheldon thinks he is the victim of a prank.

Leonard decides to run against Sheldon for president of the tenants' association; Bernadette encourages Wolowitz and Koothrappali to find the owner of a drone after they find it in the backyard.

An international student works delivering food in between school and applying for office jobs; he runs into familiar faces as he bikes around the city, trying to save up for his girlfriend's arrival, but the odds keeping stacking up against him.

With nothing to do during the IPS strike, Doug tries substitute teaching at the school at which his sister, Stephanie (Ricki Lake), works.

Carrie and Kelly plan a get-together for Doug, Deacon and Arthur to keep them from going crazy during the strike.

Doug and Carrie (Kevin James, Leah Remini) think back to the couple's first Thanksgiving spent with her parents. Guest star: Florence Henderson.

Doug and Carrie are caught in embarrassing circumstances while looking after Deacon and Kelly's children.

An international student works delivering food in between school and applying for office jobs; he runs into familiar faces as he bikes around the city, trying to save up for his girlfriend's arrival, but the odds keeping stacking up against him.

Darlene figures out a new plan to afford Mark's college tuition; Jackie and Louise try to help Becky meet a new guy.

Neville confronts Jackie about loaning Dan money; Darlene attempts to play matchmaker for Mark.

Brent enters into a long-term relationship; Wanda's telescope.

A simple jar of jellybeans turns Dog River's park from a dilapidated local hazard into full-blown scandal.

Davis forgets Karen's birthday and rallies the gang to help him throw together a last-minute party with some unfortunate results; Oscar reckons with the fact that he's terrible at giving gifts.

Brent gets his own private VIP section at the bar; Hank loses his keys and enlists Lacey's help to retrace his steps; Wanda attempts to retrain Davis's memory.

Two guys are quite confident when they get into the Cash Cab; they can't even imagine what other answer it could be.

Two guys are obviously Discovery Channel buffs who are not easily stumped by Discovery Channel questions.

Brent enters into a long-term relationship; Wanda's telescope.

A simple jar of jellybeans turns Dog River's park from a dilapidated local hazard into full-blown scandal.

Davis forgets Karen's birthday and rallies the gang to help him throw together a last-minute party with some unfortunate results; Oscar reckons with the fact that he's terrible at giving gifts.

Brent gets his own private VIP section at the bar; Hank loses his keys and enlists Lacey's help to retrace his steps; Wanda attempts to retrain Davis's memory.

Two guys are quite confident when they get into the Cash Cab; they can't even imagine what other answer it could be.

Two guys are obviously Discovery Channel buffs who are not easily stumped by Discovery Channel questions.

Brent enters into a long-term relationship; Wanda's telescope.

A simple jar of jellybeans turns Dog River's park from a dilapidated local hazard into full-blown scandal.

Davis forgets Karen's birthday and rallies the gang to help him throw together a last-minute party with some unfortunate results; Oscar reckons with the fact that he's terrible at giving gifts.

Brent gets his own private VIP section at the bar; Hank loses his keys and enlists Lacey's help to retrace his steps; Wanda attempts to retrain Davis's memory.

As Mark's graduation approaches, he considers his relationship with his father; Louise plans a big graduation ceremony at the Lunch Box.

With nothing to do during the IPS strike, Doug tries substitute teaching at the school at which his sister, Stephanie (Ricki Lake), works.

Carrie and Kelly plan a get-together for Doug, Deacon and Arthur to keep them from going crazy during the strike.

Doug and Carrie (Kevin James, Leah Remini) think back to the couple's first Thanksgiving spent with her parents. Guest star: Florence Henderson.

Doug and Carrie are caught in embarrassing circumstances while looking after Deacon and Kelly's children.

Sheldon's comic book store experience changes when writer Neil Gaiman puts Stuart's store on the map; friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.

Sheldon goes to Las Vegas to win money for science; Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.

Sheldon's mother won't attend his wedding unless he invites his brother; the Wolowitz kids inadvertently infest Amy, Bernadette, Wolowitz and Koothrappali with pink eye.

As Mark's graduation approaches, he considers his relationship with his father; Louise plans a big graduation ceremony at the Lunch Box.

Jackie faces problems at the Lunch Box and must take advice from an unexpected guest; Dan and Darlene take a trip into Chicago.

Rachel makes her handsome new assistant (Eddie Cahill) hang out with Joey rather than the women in her office.

Monica makes Chandler apologize to an old girlfriend (Stacy Galina) for leaving her because she was fat; Monica struggles to select a maid of honor.

Ross' doctoral dissertation is stored in a remote corner of the university library frequently used by students having sex; Rachel and Phoebe bond with Joey's date (Kristin Davis), then try to convince him to continue seeing her.

When you're young and single in the city, your friends are your family. A tight-knit group of friends living in Manhattan - three girls and three guys - navigate the complexities of adulthood and rely on the companionship, comfort and support they get from each other to deal with the pressures of life.

Sheldon's comic book store experience changes when writer Neil Gaiman puts Stuart's store on the map; friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.

Sheldon goes to Las Vegas to win money for science; Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.

When Amy's parents and Sheldon's family arrive, everybody is focused on making sure the wedding arrangements go according to plan - everyone except the bride and groom.

Sheldon and Amy's honeymoon runs aground in New York; Penny and Leonard discover they are uncomfortably similar to Amy's parents; Koothrappali insults physicist Neil deGrasse Tyson and starts a Twitter war.

Sheldon's mother won't attend his wedding unless he invites his brother; the Wolowitz kids inadvertently infest Amy, Bernadette, Wolowitz and Koothrappali with pink eye.

Jackie faces problems at the Lunch Box and must take advice from an unexpected guest; Dan and Darlene take a trip into Chicago.

Sheldon's comic book store experience changes when writer Neil Gaiman puts Stuart's store on the map; friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.

Sheldon goes to Las Vegas to win money for science; Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.

Sheldon's mother won't attend his wedding unless he invites his brother; the Wolowitz kids inadvertently infest Amy, Bernadette, Wolowitz and Koothrappali with pink eye.

Sheldon and Amy's honeymoon runs aground in New York; Penny and Leonard discover they are uncomfortably similar to Amy's parents; Koothrappali insults physicist Neil deGrasse Tyson and starts a Twitter war.

Rachel makes her handsome new assistant (Eddie Cahill) hang out with Joey rather than the women in her office.

Monica makes Chandler apologize to an old girlfriend (Stacy Galina) for leaving her because she was fat; Monica struggles to select a maid of honor.

Ross' doctoral dissertation is stored in a remote corner of the university library frequently used by students having sex; Rachel and Phoebe bond with Joey's date (Kristin Davis), then try to convince him to continue seeing her.

When you're young and single in the city, your friends are your family. A tight-knit group of friends living in Manhattan - three girls and three guys - navigate the complexities of adulthood and rely on the companionship, comfort and support they get from each other to deal with the pressures of life.

When Amy's parents and Sheldon's family arrive, everybody is focused on making sure the wedding arrangements go according to plan - everyone except the bride and groom.

Sheldon and Amy's honeymoon runs aground in New York; Penny and Leonard discover they are uncomfortably similar to Amy's parents; Koothrappali insults physicist Neil deGrasse Tyson and starts a Twitter war.

As Mark's graduation approaches, he considers his relationship with his father; Louise plans a big graduation ceremony at the Lunch Box.

Jackie faces problems at the Lunch Box and must take advice from an unexpected guest; Dan and Darlene take a trip into Chicago.

Brent helps Lacey buy a new car; Karen and Davis try to break the idea of cops in donut shops.

Karen is upset when Emma cuts Brent's hair; Hank promises to stain Lacey's deck.

Davis accidentally totals the police cruiser and tries to cover it up; Hank and Wanda are tasked with making Dog River rat free; Emma struggles to get Oscar on board with spring-cleaning.

Brent and Hank are disappointed to find that their favorite wrestler has become a gardener.

When a fun and funny duo answers correctly, they know they will be making money!

Check out how no team has ever been this fooled by the "Cash Cab"; once, twice, three times, Adam doesn't just take them to their destination, but as usual, they come around and play another game.

Brent helps Lacey buy a new car; Karen and Davis try to break the idea of cops in donut shops.

Karen is upset when Emma cuts Brent's hair; Hank promises to stain Lacey's deck.

Davis accidentally totals the police cruiser and tries to cover it up; Hank and Wanda are tasked with making Dog River rat free; Emma struggles to get Oscar on board with spring-cleaning.

Brent and Hank are disappointed to find that their favorite wrestler has become a gardener.

When a fun and funny duo answers correctly, they know they will be making money!

Check out how no team has ever been this fooled by the "Cash Cab"; once, twice, three times, Adam doesn't just take them to their destination, but as usual, they come around and play another game.

Brent helps Lacey buy a new car; Karen and Davis try to break the idea of cops in donut shops.

Karen is upset when Emma cuts Brent's hair; Hank promises to stain Lacey's deck.

Davis accidentally totals the police cruiser and tries to cover it up; Hank and Wanda are tasked with making Dog River rat free; Emma struggles to get Oscar on board with spring-cleaning.

Brent and Hank are disappointed to find that their favorite wrestler has become a gardener.

Becky decides it's time to introduce Tyler to Beverly Rose, but she is skeptical of Tyler's bonding approach; Jackie believes someone has hacked Bev's credit card when several frivolous charges show up on the bank statement.

Rachel makes her handsome new assistant (Eddie Cahill) hang out with Joey rather than the women in her office.

Monica makes Chandler apologize to an old girlfriend (Stacy Galina) for leaving her because she was fat; Monica struggles to select a maid of honor.

Ross' doctoral dissertation is stored in a remote corner of the university library frequently used by students having sex; Rachel and Phoebe bond with Joey's date (Kristin Davis), then try to convince him to continue seeing her.

When you're young and single in the city, your friends are your family. A tight-knit group of friends living in Manhattan - three girls and three guys - navigate the complexities of adulthood and rely on the companionship, comfort and support they get from each other to deal with the pressures of life.

Sheldon and Amy go crazy trying to figure out what "perfect gift" Leonard and Penny gave them for their wedding; Koothrappali decides to settle down and asks his father to arrange a marriage for him.

Life gets complicated when Stuart starts bringing his new girlfriend home; Penny and Leonard talk about starting a family; Koothrappali explores an arranged marriage.

When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands; Bernadette and Penny take Raj's fiancée out to dinner to get to know her.

Becky decides it's time to introduce Tyler to Beverly Rose, but she is skeptical of Tyler's bonding approach; Jackie believes someone has hacked Bev's credit card when several frivolous charges show up on the bank statement.

Bev experiences moments of clarity and reflection and asks Jackie to spend the day together in Chicago; Darlene finds a rat in her home but refuses to let Ben kill it.

Rachel finds it embarrassing that she is paying the way for her hunky new boyfriend (Eddie Cahill), who is also her assistant at work.

Ross' attempts to introduce his son, Ben, to Hanukkah are thwarted by the tyke's like of all things Christmas.

Phoebe and Joey are at odds when she tries to cancel their weekly dinner plans so she can meet an old beau.

During their first night together, Rachel and Tag realize they forgot to ship out an important package at the office.

Sheldon and Amy go crazy trying to figure out what "perfect gift" Leonard and Penny gave them for their wedding; Koothrappali decides to settle down and asks his father to arrange a marriage for him.

Life gets complicated when Stuart starts bringing his new girlfriend home; Penny and Leonard talk about starting a family; Koothrappali explores an arranged marriage.

When Amy doesn't have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she's available; Koothrappali doesn't want Wolowitz to join him in hosting a show at the planetarium.

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party; Leonard is shocked when Penny doesn't remember their first kiss.

When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands; Bernadette and Penny take Raj's fiancée out to dinner to get to know her.

Bev experiences moments of clarity and reflection and asks Jackie to spend the day together in Chicago; Darlene finds a rat in her home but refuses to let Ben kill it.

Sheldon and Amy go crazy trying to figure out what "perfect gift" Leonard and Penny gave them for their wedding; Koothrappali decides to settle down and asks his father to arrange a marriage for him.

Life gets complicated when Stuart starts bringing his new girlfriend home; Penny and Leonard talk about starting a family; Koothrappali explores an arranged marriage.

When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands; Bernadette and Penny take Raj's fiancée out to dinner to get to know her.

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party; Leonard is shocked when Penny doesn't remember their first kiss.

Rachel finds it embarrassing that she is paying the way for her hunky new boyfriend (Eddie Cahill), who is also her assistant at work.

Ross' attempts to introduce his son, Ben, to Hanukkah are thwarted by the tyke's like of all things Christmas.

Phoebe and Joey are at odds when she tries to cancel their weekly dinner plans so she can meet an old beau.

During their first night together, Rachel and Tag realize they forgot to ship out an important package at the office.

When Amy doesn't have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she's available; Koothrappali doesn't want Wolowitz to join him in hosting a show at the planetarium.

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party; Leonard is shocked when Penny doesn't remember their first kiss.

Becky decides it's time to introduce Tyler to Beverly Rose, but she is skeptical of Tyler's bonding approach; Jackie believes someone has hacked Bev's credit card when several frivolous charges show up on the bank statement.

Bev experiences moments of clarity and reflection and asks Jackie to spend the day together in Chicago; Darlene finds a rat in her home but refuses to let Ben kill it.

When a morning radio DJ impersonates Brent on his show, he goes out of his way to prove it's not him; Lacey is upset with her delivery service.

Oscar and Emma argue over the room temperature; Karen makes Lacey regret disobeying a local yield sign.

Lacey plans a parade for Dog River Days with all the fixings; Wanda uses a mascot to convince a corporate sponsor to support the cause; Hank battles Emma for the beauty pageant crown.

Brent accidentally locks Hank and Wanda in Corner Gas; Emma tries to get out of making Davis's special bread.

Paul and Connor know immediately what is in store when the lights go off in the Cash Cab and do their best to keep themselves from getting kicked out.

Another great and exciting game of 4. These two couple are riding high in the cash cab and making big bucks when a hard question...

When a morning radio DJ impersonates Brent on his show, he goes out of his way to prove it's not him; Lacey is upset with her delivery service.

Oscar and Emma argue over the room temperature; Karen makes Lacey regret disobeying a local yield sign.

Lacey plans a parade for Dog River Days with all the fixings; Wanda uses a mascot to convince a corporate sponsor to support the cause; Hank battles Emma for the beauty pageant crown.

Brent accidentally locks Hank and Wanda in Corner Gas; Emma tries to get out of making Davis's special bread.

Paul and Connor know immediately what is in store when the lights go off in the Cash Cab and do their best to keep themselves from getting kicked out.

Another great and exciting game of 4. These two couple are riding high in the cash cab and making big bucks when a hard question...

When a morning radio DJ impersonates Brent on his show, he goes out of his way to prove it's not him; Lacey is upset with her delivery service.

Oscar and Emma argue over the room temperature; Karen makes Lacey regret disobeying a local yield sign.

Lacey plans a parade for Dog River Days with all the fixings; Wanda uses a mascot to convince a corporate sponsor to support the cause; Hank battles Emma for the beauty pageant crown.

Brent accidentally locks Hank and Wanda in Corner Gas; Emma tries to get out of making Davis's special bread.

Mark adjusts to his first day of college as a commuter student; Becky gets into a disagreement with Beverly Rose's music teacher over a song.

Rachel finds it embarrassing that she is paying the way for her hunky new boyfriend (Eddie Cahill), who is also her assistant at work.

Ross' attempts to introduce his son, Ben, to Hanukkah are thwarted by the tyke's like of all things Christmas.

Phoebe and Joey are at odds when she tries to cancel their weekly dinner plans so she can meet an old beau.

During their first night together, Rachel and Tag realize they forgot to ship out an important package at the office.

Leonard is caught between a rock and a hard place when he becomes responsible for distributing extra grant money; Bernadette turns the backyard playhouse into a hideaway to get away from her husband and kids.

Sheldon tries to bond with Amy's father, but when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler; Koothrappali and Anu try to get physical for the first time.

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved; Bernadette wants to beat Howard in a popular video game.

Mark adjusts to his first day of college as a commuter student; Becky gets into a disagreement with Beverly Rose's music teacher over a song.

Darlene crashes Mark's college trivia night to prove how smart she is; Neville finds out the money he loaned Dan was used for something other than its intended purpose.

Sheldon leaves East Texas for the California Institute of Technology following the death of his father, George Cooper Sr.

Young Sheldon ends its seven-year run with a must-see two-episode series finale; Jim Parsons and Mayim Bialik reprise their roles as Sheldon Cooper and Amy Farrah Fowler in an unforgettable hour of television.

Sheldon learns that his high intelligence isn't always helpful growing up in East Texas, where church and football are king.

To appease his mother, Sheldon goes on a quest to make his first friend by following techniques in a self-help book.

Leonard is caught between a rock and a hard place when he becomes responsible for distributing extra grant money; Bernadette turns the backyard playhouse into a hideaway to get away from her husband and kids.

Sheldon tries to bond with Amy's father, but when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler; Koothrappali and Anu try to get physical for the first time.

A VHS tape from Sheldon's past inspires him not to give up; Bernadette turns into a pageant mom when she tries to help Wolowitz with his Magic Castle audition.

Penny and Leonard organize a paintball game, which results in mayhem when Sheldon becomes jealous of Amy; Koothrappali catches Anu with her ex-boyfriend; Stuart doesn't want to move in with Denise.

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved; Bernadette wants to beat Howard in a popular video game.

Darlene crashes Mark's college trivia night to prove how smart she is; Neville finds out the money he loaned Dan was used for something other than its intended purpose.

Leonard is caught between a rock and a hard place when he becomes responsible for distributing extra grant money; Bernadette turns the backyard playhouse into a hideaway to get away from her husband and kids.

Sheldon tries to bond with Amy's father, but when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler; Koothrappali and Anu try to get physical for the first time.

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved; Bernadette wants to beat Howard in a popular video game.

Penny and Leonard organize a paintball game, which results in mayhem when Sheldon becomes jealous of Amy; Koothrappali catches Anu with her ex-boyfriend; Stuart doesn't want to move in with Denise.

Sheldon leaves East Texas for the California Institute of Technology following the death of his father, George Cooper Sr.

Young Sheldon ends its seven-year run with a must-see two-episode series finale; Jim Parsons and Mayim Bialik reprise their roles as Sheldon Cooper and Amy Farrah Fowler in an unforgettable hour of television.

Sheldon learns that his high intelligence isn't always helpful growing up in East Texas, where church and football are king.

To appease his mother, Sheldon goes on a quest to make his first friend by following techniques in a self-help book.

A VHS tape from Sheldon's past inspires him not to give up; Bernadette turns into a pageant mom when she tries to help Wolowitz with his Magic Castle audition.

Penny and Leonard organize a paintball game, which results in mayhem when Sheldon becomes jealous of Amy; Koothrappali catches Anu with her ex-boyfriend; Stuart doesn't want to move in with Denise.

Mark adjusts to his first day of college as a commuter student; Becky gets into a disagreement with Beverly Rose's music teacher over a song.

Darlene crashes Mark's college trivia night to prove how smart she is; Neville finds out the money he loaned Dan was used for something other than its intended purpose.

Brent and Lacey mentor high school students; Emma decides to be nicer to Oscar.

Brent helps Hank tear down a barn; Emma receives multiple manicures; David hires Wanda to snap pictures of him working.

Davis is locked in a jail cell to raise money for charity; Wanda tries to install a toilet.

Karen prepares an eyewitness testimony; Hank tries becoming a rodeo clown.

A guest is annoyed by the lights on the ceiling, asking Adam to turn them off; she realizes this is a game in which she and her friends can make money, then it's game on.

After a night on the town, a group of frat boys happen to catch the Cash Cab.

Brent and Lacey mentor high school students; Emma decides to be nicer to Oscar.

Brent helps Hank tear down a barn; Emma receives multiple manicures; David hires Wanda to snap pictures of him working.

Davis is locked in a jail cell to raise money for charity; Wanda tries to install a toilet.

Karen prepares an eyewitness testimony; Hank tries becoming a rodeo clown.

A guest is annoyed by the lights on the ceiling, asking Adam to turn them off; she realizes this is a game in which she and her friends can make money, then it's game on.

After a night on the town, a group of frat boys happen to catch the Cash Cab.

Brent and Lacey mentor high school students; Emma decides to be nicer to Oscar.

Brent helps Hank tear down a barn; Emma receives multiple manicures; David hires Wanda to snap pictures of him working.

Davis is locked in a jail cell to raise money for charity; Wanda tries to install a toilet.

Karen prepares an eyewitness testimony; Hank tries becoming a rodeo clown.

Darlene urges Ben to make some male friends as he feels anxious about turning 50; Mark asks Harris to buy him and his friends beer for their dorm room.

Sheldon leaves East Texas for the California Institute of Technology following the death of his father, George Cooper Sr.

Young Sheldon ends its seven-year run with a must-see two-episode series finale; Jim Parsons and Mayim Bialik reprise their roles as Sheldon Cooper and Amy Farrah Fowler in an unforgettable hour of television.

Sheldon learns that his high intelligence isn't always helpful growing up in East Texas, where church and football are king.

To appease his mother, Sheldon goes on a quest to make his first friend by following techniques in a self-help book.

Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.

Sheldon and Amy are thrilled when their super asymmetry theory is proven by two physicists, until they try to kick Amy off the Nobel nomination; Bernadette has a big success at work.

Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law; Leonard is disappointed when his friends exclude him from a scientific project.

Darlene urges Ben to make some male friends as he feels anxious about turning 50; Mark asks Harris to buy him and his friends beer for their dorm room.

The hardware store experiences a smash-and-grab; Dan and Jackie nab one of the culprits; Beverly Rose learns a lesson in remembering loved ones who have passed while keeping their memories alive.

George Sr. is rushed to the emergency room; Meemaw comes to baby-sit; the kids have an adventure getting to the hospital on their own.

Sheldon refuses to eat solid foods after a choking scare with a breakfast sausage; he discovers comic books for the first time.

Sheldon struggles with newfound popularity after utilizing statistics to help the football team.

Sheldon is shocked when a NASA representative at school dismisses his science; he becomes determined to prove him wrong.

Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.

Sheldon and Amy are thrilled when their super asymmetry theory is proven by two physicists, until they try to kick Amy off the Nobel nomination; Bernadette has a big success at work.

Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend; Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet.".

The gang uses deception and betrayal to make it to the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game with William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith.

Tom goes on an adventure with Lucy; Snoop samples Ricky's new concoction; Lahey works on a diabolical plot.

The gang prepares for Trinity and Jacob's wedding; Barb wrestles with a big decision regarding the park.

Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.

Sheldon and Amy are thrilled when their super asymmetry theory is proven by two physicists, until they try to kick Amy off the Nobel nomination; Bernadette has a big success at work.

Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law; Leonard is disappointed when his friends exclude him from a scientific project.

The gang uses deception and betrayal to make it to the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game with William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith.

Tom goes on an adventure with Lucy; Snoop samples Ricky's new concoction; Lahey works on a diabolical plot.

The gang prepares for Trinity and Jacob's wedding; Barb wrestles with a big decision regarding the park.

Sheldon struggles with newfound popularity after utilizing statistics to help the football team.

Sheldon is shocked when a NASA representative at school dismisses his science; he becomes determined to prove him wrong.

Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend; Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet.".

The gang uses deception and betrayal to make it to the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game with William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith.

Darlene urges Ben to make some male friends as he feels anxious about turning 50; Mark asks Harris to buy him and his friends beer for their dorm room.

The hardware store experiences a smash-and-grab; Dan and Jackie nab one of the culprits; Beverly Rose learns a lesson in remembering loved ones who have passed while keeping their memories alive.

Brent talks Hank into starting a blog; Lacey's friend gets her own cooking show; Wanda helps Davis with his taxes.

Brent realizes that Corner Gas may not actually be within the town of Dog River.

Emma gives Davis and Wanda piano lessons; Lacey deals with a broken arm.

Brent discovers a newfound love of his childhood toys when Emma gives them to Hank.

Brent is in the doghouse when Hank proves to be a better son to Emma.

Lacey thinks Davis and Karen are more than work partners; Hank and Oscar are two no-nonsense census takers out to count the names and tally the numbers.

When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is left in charge of the kids; Sheldon finds a book about experimenting on kids.

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold; Halley's fear of the dark leads to opportunity and conflict.

The weight of winning a Nobel Prize weighs heavy on Amy's shoulders; Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.

Koothrappali is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life; Leonard wants to be the principal investigator on a plasma physics study.

Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not; Wolowitz learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.

Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him, until he finds out the real reason she's there; Denise and Stuart overstay their welcome at the Wolowitz house.

Sheldon and Amy await big news.

Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.

Leonard is happy to meet new neighbor Penny, but his roommate thinks he is chasing an impossible dream.

Leonard volunteers to sign for a package, hoping to make a good impression on Penny.

Unhappy to learn that Penny is seeing someone, Leonard summons the courage to ask another woman on a date.

Getting fired gives Sheldon the opportunity to explore life beyond physics, but when he spends his time weaving ponchos and acting like a shut-in, Leonard calls Sheldon's mother for assistance.

Leonard, realizing his pursuit of Penny is fruitless, has an unexpected encounter with a fellow scientist (Sara Gilbert).

Penny sleeps on Leonard and Sheldon's couch when Wolowitz seduces her friend and takes over her apartment; in need of a fourth member, the guys ask Penny to join their "Halo" team.

When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is left in charge of the kids; Sheldon finds a book about experimenting on kids.

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold; Halley's fear of the dark leads to opportunity and conflict.

The weight of winning a Nobel Prize weighs heavy on Amy's shoulders; Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.

Koothrappali is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life; Leonard wants to be the principal investigator on a plasma physics study.

Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not; Wolowitz learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.

Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him, until he finds out the real reason she's there; Denise and Stuart overstay their welcome at the Wolowitz house.

Sheldon and Amy await big news.

Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.

Leonard is happy to meet new neighbor Penny, but his roommate thinks he is chasing an impossible dream.

Leonard volunteers to sign for a package, hoping to make a good impression on Penny.

Unhappy to learn that Penny is seeing someone, Leonard summons the courage to ask another woman on a date.

Getting fired gives Sheldon the opportunity to explore life beyond physics, but when he spends his time weaving ponchos and acting like a shut-in, Leonard calls Sheldon's mother for assistance.

Leonard, realizing his pursuit of Penny is fruitless, has an unexpected encounter with a fellow scientist (Sara Gilbert).

Penny sleeps on Leonard and Sheldon's couch when Wolowitz seduces her friend and takes over her apartment; in need of a fourth member, the guys ask Penny to join their "Halo" team.

When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is left in charge of the kids; Sheldon finds a book about experimenting on kids.

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold; Halley's fear of the dark leads to opportunity and conflict.

The weight of winning a Nobel Prize weighs heavy on Amy's shoulders; Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.

Koothrappali is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life; Leonard wants to be the principal investigator on a plasma physics study.

Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not; Wolowitz learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.

Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him, until he finds out the real reason she's there; Denise and Stuart overstay their welcome at the Wolowitz house.

Sheldon and Amy await big news.

Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.

Leonard is happy to meet new neighbor Penny, but his roommate thinks he is chasing an impossible dream.

Leonard volunteers to sign for a package, hoping to make a good impression on Penny.

Unhappy to learn that Penny is seeing someone, Leonard summons the courage to ask another woman on a date.

Getting fired gives Sheldon the opportunity to explore life beyond physics, but when he spends his time weaving ponchos and acting like a shut-in, Leonard calls Sheldon's mother for assistance.

Leonard, realizing his pursuit of Penny is fruitless, has an unexpected encounter with a fellow scientist (Sara Gilbert).

Penny sleeps on Leonard and Sheldon's couch when Wolowitz seduces her friend and takes over her apartment; in need of a fourth member, the guys ask Penny to join their "Halo" team.

Davis buys a table hockey game for the station and finds that Karen is good at it.

Lacey and Karen institute an open borrowing policy; Brent watches a horror movie for the first time.

Wanda accidentally breaks Emma's potato bowl; Hank tries to develop his storytelling skills.

Brent decides to try laser eye surgery; police cruiser gets a new slogan.

Brent and Oscar take Davis on a camping trip; Hank finally wakes up with a good hair day.

Corner Gas goes through a business boom after Hank comes up with an idea to increase tourism.

On her first day as a telemarketer, Phoebe encounters a distraught man (Jason Alexander) who is determined to end his life.

Celebrating Rachel's 30th birthday inspires the friends to reminisce about their own 30th birthdays - Joey got angry with God for breaking their deal; Ross bought a sports car; Monica got drunk and embarrassed herself at her surprise party.

Joey accidentally informs a cast member (Susan Sarandon) that she will be fired so that his character will get her character's brain.

Monica and Chandler fondly reminisce about London until a startling revelation leaves Chandler floored.

Monica regrets telling a woman about a discount bridal shop when they end up competing for a wedding dress.

Joey is overjoyed to be nominated for a "Soapie" award; engaged Monica frets when she realizes she will never experience the thrill of a new relationship again; Ross spots Chandler sneaking out of a male strip club.

Joey auditions for a big role which will require him to appear naked; Rachel and Phoebe plan Monica's bridal shower; Ross and Monica's attractive cousin visits and stirs the passions of all men who meet her.

A college friend with whom Rachel shared an embarrassing and passionate moment shows up at Central Perk; Chandler and Ross argue for possession of Val Kilmer's tuxedo; Joey drives Monica crazy over the wedding schedule.

With only four weeks until their wedding, Monica and Chandler try to write their vows; Chandler enlists the boys' help, while Monica does the same with the girls.

Trying to ensure an ideal wedding, Monica arranges a meeting so Chandler and his estranged father can reconcile.

On the eve of the wedding, Ross searches for missing Chandler, who has doubts, while the girls distract unsuspecting Monica.

Ross tries to find Chandler with Phoebe's help; Rachel tries to hinder Monica.

The reception following Monica and Chandler's wedding is almost upstaged by the news that a member of the group might be pregnant.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

On her first day as a telemarketer, Phoebe encounters a distraught man (Jason Alexander) who is determined to end his life.

Celebrating Rachel's 30th birthday inspires the friends to reminisce about their own 30th birthdays - Joey got angry with God for breaking their deal; Ross bought a sports car; Monica got drunk and embarrassed herself at her surprise party.

Joey accidentally informs a cast member (Susan Sarandon) that she will be fired so that his character will get her character's brain.

Monica and Chandler fondly reminisce about London until a startling revelation leaves Chandler floored.

Monica regrets telling a woman about a discount bridal shop when they end up competing for a wedding dress.

Joey is overjoyed to be nominated for a "Soapie" award; engaged Monica frets when she realizes she will never experience the thrill of a new relationship again; Ross spots Chandler sneaking out of a male strip club.

Joey auditions for a big role which will require him to appear naked; Rachel and Phoebe plan Monica's bridal shower; Ross and Monica's attractive cousin visits and stirs the passions of all men who meet her.

A college friend with whom Rachel shared an embarrassing and passionate moment shows up at Central Perk; Chandler and Ross argue for possession of Val Kilmer's tuxedo; Joey drives Monica crazy over the wedding schedule.

With only four weeks until their wedding, Monica and Chandler try to write their vows; Chandler enlists the boys' help, while Monica does the same with the girls.

Trying to ensure an ideal wedding, Monica arranges a meeting so Chandler and his estranged father can reconcile.

On the eve of the wedding, Ross searches for missing Chandler, who has doubts, while the girls distract unsuspecting Monica.

Ross tries to find Chandler with Phoebe's help; Rachel tries to hinder Monica.

The reception following Monica and Chandler's wedding is almost upstaged by the news that a member of the group might be pregnant.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

On her first day as a telemarketer, Phoebe encounters a distraught man (Jason Alexander) who is determined to end his life.

Celebrating Rachel's 30th birthday inspires the friends to reminisce about their own 30th birthdays - Joey got angry with God for breaking their deal; Ross bought a sports car; Monica got drunk and embarrassed herself at her surprise party.

Joey accidentally informs a cast member (Susan Sarandon) that she will be fired so that his character will get her character's brain.

Monica and Chandler fondly reminisce about London until a startling revelation leaves Chandler floored.

Monica regrets telling a woman about a discount bridal shop when they end up competing for a wedding dress.

Joey is overjoyed to be nominated for a "Soapie" award; engaged Monica frets when she realizes she will never experience the thrill of a new relationship again; Ross spots Chandler sneaking out of a male strip club.

Joey auditions for a big role which will require him to appear naked; Rachel and Phoebe plan Monica's bridal shower; Ross and Monica's attractive cousin visits and stirs the passions of all men who meet her.

A college friend with whom Rachel shared an embarrassing and passionate moment shows up at Central Perk; Chandler and Ross argue for possession of Val Kilmer's tuxedo; Joey drives Monica crazy over the wedding schedule.

With only four weeks until their wedding, Monica and Chandler try to write their vows; Chandler enlists the boys' help, while Monica does the same with the girls.

Trying to ensure an ideal wedding, Monica arranges a meeting so Chandler and his estranged father can reconcile.

On the eve of the wedding, Ross searches for missing Chandler, who has doubts, while the girls distract unsuspecting Monica.

Ross tries to find Chandler with Phoebe's help; Rachel tries to hinder Monica.

The reception following Monica and Chandler's wedding is almost upstaged by the news that a member of the group might be pregnant.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

A cable guy visits Dog River to help produce some local access programming, but the town isn't quite ready for prime time; Brent is selected to choose which idea will be produced.

Karen remembers what it feels like to be a school kid again when she takes up a new form of exercise.

A wedding ring flies away; a priest exorcises a jig; corn goes flying!

Kilts meet fans, a kid fakes blindness and a handshake goes terribly wrong.

Two daddy's girls are on their way to Asia and could use some travel money; after a successful ride in the Cash Cab, these ladies forget travel and contemplate spending their winnings on shoes.

Dan, Josh and Michael need to get paid and are stoked about answering questions in the Cash Cab.

A cable guy visits Dog River to help produce some local access programming, but the town isn't quite ready for prime time; Brent is selected to choose which idea will be produced.

Karen remembers what it feels like to be a school kid again when she takes up a new form of exercise.

A wedding ring flies away; a priest exorcises a jig; corn goes flying!

Kilts meet fans, a kid fakes blindness and a handshake goes terribly wrong.

Two daddy's girls are on their way to Asia and could use some travel money; after a successful ride in the Cash Cab, these ladies forget travel and contemplate spending their winnings on shoes.

Dan, Josh and Michael need to get paid and are stoked about answering questions in the Cash Cab.

A cable guy visits Dog River to help produce some local access programming, but the town isn't quite ready for prime time; Brent is selected to choose which idea will be produced.

Karen remembers what it feels like to be a school kid again when she takes up a new form of exercise.

A wedding ring flies away; a priest exorcises a jig; corn goes flying!

Kilts meet fans, a kid fakes blindness and a handshake goes terribly wrong.

After feeling the cafeteria staff could use some organization, Darlene seeks to be the manager of food services at Mark's college; Dan teaches housewives the basics of DIY home projects to make some extra money toward paying off the house.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks, but his date takes an interest in Sheldon.

Penny tries to mediate when Sheldon and Leonard disagree on whether to present their joint findings at a physics conference.

Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing, but the elaborate lie Sheldon tells leads to an unexpected result.

After feeling the cafeteria staff could use some organization, Darlene seeks to be the manager of food services at Mark's college; Dan teaches housewives the basics of DIY home projects to make some extra money toward paying off the house.

The Conners relish national cheeseball day as a family; Harris falls behind in her work duties at the Lunch Box; Darlene and Ben must figure out how to spend time together despite their two separate schedules.

Arthur accepts a job at Carrie's company; Doug and Deacon compete for a place in their company's calendar of hunks.

Doug (Kevin James) feels great when he surprises Carrie (Leah Remini) with a new camera for Christmas, but her boss one-ups him. Guest star: Lou Ferrigno.

After learning that a wedding reception is five hours away, Doug and Carrie scramble for an excuse to not go.

Doug sets up Stephanie with Carrie's boss so he can watch the Super Bowl on a high-definition television.

On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks, but his date takes an interest in Sheldon.

Penny tries to mediate when Sheldon and Leonard disagree on whether to present their joint findings at a physics conference.

Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.

Jasmeet spends a weekend with Rebecca's parents at their family cottage; Cornhole and French wine are unfamiliar family traditions to him, but Jasmeet is eager to make a good impression; if he could just shake this eerie feeling.

Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing, but the elaborate lie Sheldon tells leads to an unexpected result.

The Conners relish national cheeseball day as a family; Harris falls behind in her work duties at the Lunch Box; Darlene and Ben must figure out how to spend time together despite their two separate schedules.

On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks, but his date takes an interest in Sheldon.

Penny tries to mediate when Sheldon and Leonard disagree on whether to present their joint findings at a physics conference.

Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing, but the elaborate lie Sheldon tells leads to an unexpected result.

Jasmeet spends a weekend with Rebecca's parents at their family cottage; Cornhole and French wine are unfamiliar family traditions to him, but Jasmeet is eager to make a good impression; if he could just shake this eerie feeling.

Arthur accepts a job at Carrie's company; Doug and Deacon compete for a place in their company's calendar of hunks.

Doug (Kevin James) feels great when he surprises Carrie (Leah Remini) with a new camera for Christmas, but her boss one-ups him. Guest star: Lou Ferrigno.

After learning that a wedding reception is five hours away, Doug and Carrie scramble for an excuse to not go.

Doug sets up Stephanie with Carrie's boss so he can watch the Super Bowl on a high-definition television.

Jasmeet spends a weekend with Rebecca's parents at their family cottage; Cornhole and French wine are unfamiliar family traditions to him, but Jasmeet is eager to make a good impression; if he could just shake this eerie feeling.

After feeling the cafeteria staff could use some organization, Darlene seeks to be the manager of food services at Mark's college; Dan teaches housewives the basics of DIY home projects to make some extra money toward paying off the house.

The Conners relish national cheeseball day as a family; Harris falls behind in her work duties at the Lunch Box; Darlene and Ben must figure out how to spend time together despite their two separate schedules.

An initially fun game of golf between Brent, Lacey and Hank quickly turns into a round-robin of aggravation.

Karen and Davis investigate a mysterious crop circle near Dog River; Oscar and Emma repaint their house.

Davis tries to get Brent to join his rugby team; Brent's more focused on inventing a new rugby chant; Hank and Karen convince Lacey to start selling pizza in the Ruby.

The band Thunderface reunites; a song Brent wrote back in high school has Lacey investigating his mystery crush; Oscar shoots a fundraising video for the Seniors' Center.

There are many questions for Adam upon figuring out that they are in the Cash Cab; regardless, the group of three carry on.

Tina and Ashley are on their way to lunch when they happen to hail the "Cash Cab"; everyone has a good laugh during their street shout-out where big hugs are given out to complete strangers.

An initially fun game of golf between Brent, Lacey and Hank quickly turns into a round-robin of aggravation.

Karen and Davis investigate a mysterious crop circle near Dog River; Oscar and Emma repaint their house.

Davis tries to get Brent to join his rugby team; Brent's more focused on inventing a new rugby chant; Hank and Karen convince Lacey to start selling pizza in the Ruby.

The band Thunderface reunites; a song Brent wrote back in high school has Lacey investigating his mystery crush; Oscar shoots a fundraising video for the Seniors' Center.

There are many questions for Adam upon figuring out that they are in the Cash Cab; regardless, the group of three carry on.

Tina and Ashley are on their way to lunch when they happen to hail the "Cash Cab"; everyone has a good laugh during their street shout-out where big hugs are given out to complete strangers.

An initially fun game of golf between Brent, Lacey and Hank quickly turns into a round-robin of aggravation.

Karen and Davis investigate a mysterious crop circle near Dog River; Oscar and Emma repaint their house.

Davis tries to get Brent to join his rugby team; Brent's more focused on inventing a new rugby chant; Hank and Karen convince Lacey to start selling pizza in the Ruby.

The band Thunderface reunites; a song Brent wrote back in high school has Lacey investigating his mystery crush; Oscar shoots a fundraising video for the Seniors' Center.

Dan gets asked to write an article for a hardware magazine, making Ben long for his days as a writer; Jackie inserts herself into Louise's run for the school board when her retirement leads to too much free time.

Arthur accepts a job at Carrie's company; Doug and Deacon compete for a place in their company's calendar of hunks.

Doug (Kevin James) feels great when he surprises Carrie (Leah Remini) with a new camera for Christmas, but her boss one-ups him. Guest star: Lou Ferrigno.

After learning that a wedding reception is five hours away, Doug and Carrie scramble for an excuse to not go.

Doug sets up Stephanie with Carrie's boss so he can watch the Super Bowl on a high-definition television.

Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.

When Sheldon tries to prove his mental superiority as they train for the Physics Bowl, the guys kick him off the team and bring his nemesis (Sara Gilbert) aboard.

Leonard and the guys buy a time machine prop from a classic movie; Penny tells the guys their obsession with comics and toys is pathetic.

Dan gets asked to write an article for a hardware magazine, making Ben long for his days as a writer; Jackie inserts herself into Louise's run for the school board when her retirement leads to too much free time.

A fire at Ben's hardware store causes a major setback for the family; Becky feels enormous pressure to help every single patient at her mental health facility internship.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiancé and finds that she is attracted to him.

Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.

When Sheldon tries to prove his mental superiority as they train for the Physics Bowl, the guys kick him off the team and bring his nemesis (Sara Gilbert) aboard.

Leonard devises a plan to eliminate his rivals when he, Wolowitz and Koothrappali all fall for Sheldon's twin sister, but his plan backfires when Sheldon decides to choose who his sister dates.

Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party; Sheldon unexpectedly gets to live out one of his biggest fantasies in an electronics store.

Leonard and the guys buy a time machine prop from a classic movie; Penny tells the guys their obsession with comics and toys is pathetic.

A fire at Ben's hardware store causes a major setback for the family; Becky feels enormous pressure to help every single patient at her mental health facility internship.

Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.

When Sheldon tries to prove his mental superiority as they train for the Physics Bowl, the guys kick him off the team and bring his nemesis (Sara Gilbert) aboard.

Leonard and the guys buy a time machine prop from a classic movie; Penny tells the guys their obsession with comics and toys is pathetic.

Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party; Sheldon unexpectedly gets to live out one of his biggest fantasies in an electronics store.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiancé and finds that she is attracted to him.

Leonard devises a plan to eliminate his rivals when he, Wolowitz and Koothrappali all fall for Sheldon's twin sister, but his plan backfires when Sheldon decides to choose who his sister dates.

Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party; Sheldon unexpectedly gets to live out one of his biggest fantasies in an electronics store.

Dan gets asked to write an article for a hardware magazine, making Ben long for his days as a writer; Jackie inserts herself into Louise's run for the school board when her retirement leads to too much free time.

A fire at Ben's hardware store causes a major setback for the family; Becky feels enormous pressure to help every single patient at her mental health facility internship.

Wanda's latest crush gives her his number; Brent questions his sense of smell; the Ruby gets a touch up.

Emma and Karen look for a suitable gift to send their twin town in Japan; Wanda attempts to become the advice giving bartender.

Wanda repairs junk to re-sell at the community yard sale; Oscar, Emma, and Davis become obsessed with Karen's high-end beauty serums.

The Corner Gas parking lot becomes a drive-in; Hank puts Davis and Karen on high alert for potential criminal behavior; Oscar and Emma take advantage, reliving their youthful friskiness; Lacey touches a nerve of Brent's.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Wanda's latest crush gives her his number; Brent questions his sense of smell; the Ruby gets a touch up.

Emma and Karen look for a suitable gift to send their twin town in Japan; Wanda attempts to become the advice giving bartender.

Wanda repairs junk to re-sell at the community yard sale; Oscar, Emma, and Davis become obsessed with Karen's high-end beauty serums.

The Corner Gas parking lot becomes a drive-in; Hank puts Davis and Karen on high alert for potential criminal behavior; Oscar and Emma take advantage, reliving their youthful friskiness; Lacey touches a nerve of Brent's.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Wanda's latest crush gives her his number; Brent questions his sense of smell; the Ruby gets a touch up.

Emma and Karen look for a suitable gift to send their twin town in Japan; Wanda attempts to become the advice giving bartender.

Wanda repairs junk to re-sell at the community yard sale; Oscar, Emma, and Davis become obsessed with Karen's high-end beauty serums.

The Corner Gas parking lot becomes a drive-in; Hank puts Davis and Karen on high alert for potential criminal behavior; Oscar and Emma take advantage, reliving their youthful friskiness; Lacey touches a nerve of Brent's.

Dan achieves a major financial milestone, making him reconsider his belief in the Conners' curse; Mark finds out some news that causes him to reevaluate his future.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiancé and finds that she is attracted to him.

When Leonard finally works up the courage to ask Penny out on a date, they each turn to Sheldon for advice.

Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.

After seeing Penny with a handsome new guy, Leonard rushes into a rebound relationship with Sheldon's nemesis, Leslie Winkle.

Dan achieves a major financial milestone, making him reconsider his belief in the Conners' curse; Mark finds out some news that causes him to reevaluate his future.

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

When Leonard finally works up the courage to ask Penny out on a date, they each turn to Sheldon for advice.

Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.

Sheldon creates a monster when he introduces Penny to online gaming.

Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.

After seeing Penny with a handsome new guy, Leonard rushes into a rebound relationship with Sheldon's nemesis, Leslie Winkle.

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

When Leonard finally works up the courage to ask Penny out on a date, they each turn to Sheldon for advice.

Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.

After seeing Penny with a handsome new guy, Leonard rushes into a rebound relationship with Sheldon's nemesis, Leslie Winkle.

Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

Sheldon creates a monster when he introduces Penny to online gaming.

Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.

Dan achieves a major financial milestone, making him reconsider his belief in the Conners' curse; Mark finds out some news that causes him to reevaluate his future.

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

Oscar is asked to be a school bus driver for the day; the kids may not be the only ones who need a lesson in good behavior.

Brent meets a new member of his extended family; Karen helps Wanda showcase her math skills; Ruby makes menu changes.

Brent and Lacey go to great lengths to find each other the perfect Christmas present; Hank gets conned into helping Oscar and Emma prep their annual Christmas party; Wanda goes to war with the cops over her extreme Christmas lights display.

Brent and Wanda help Lacey overcome her fears so she can go skydiving; Hank becomes the town messenger; Oscar and Emma go to war with Karen and Davis over a prime potato planting locale.

Unsuspecting taxi cab passengers answer trivia questions posed by host Ben Bailey; the passengers may reach their destination with cold hard cash or walk away empty-handed.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Oscar is asked to be a school bus driver for the day; the kids may not be the only ones who need a lesson in good behavior.

Brent meets a new member of his extended family; Karen helps Wanda showcase her math skills; Ruby makes menu changes.

Brent and Lacey go to great lengths to find each other the perfect Christmas present; Hank gets conned into helping Oscar and Emma prep their annual Christmas party; Wanda goes to war with the cops over her extreme Christmas lights display.

Brent and Wanda help Lacey overcome her fears so she can go skydiving; Hank becomes the town messenger; Oscar and Emma go to war with Karen and Davis over a prime potato planting locale.

Unsuspecting taxi cab passengers answer trivia questions posed by host Ben Bailey; the passengers may reach their destination with cold hard cash or walk away empty-handed.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Oscar is asked to be a school bus driver for the day; the kids may not be the only ones who need a lesson in good behavior.

Brent meets a new member of his extended family; Karen helps Wanda showcase her math skills; Ruby makes menu changes.

Brent and Lacey go to great lengths to find each other the perfect Christmas present; Hank gets conned into helping Oscar and Emma prep their annual Christmas party; Wanda goes to war with the cops over her extreme Christmas lights display.

Brent and Wanda help Lacey overcome her fears so she can go skydiving; Hank becomes the town messenger; Oscar and Emma go to war with Karen and Davis over a prime potato planting locale.

A sudden turn of events forces the Conners to face the daily struggles of life in Lanford in a way they never have before.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.

Sheldon and the gang are confused when a young grad student is attracted to him.

When Sheldon bans Penny from the apartment for a series of petty infractions, Penny vows to get revenge.

A sudden turn of events forces the Conners to face the daily struggles of life in Lanford in a way they never have before.

Darlene gets one surprise after another when David introduces his girlfriend at a parent-teacher conference and mentions that Mark and Harris will be spending the weekend with them; Dan hires Becky to help out at work.

Meemaw causes a feud when she refuses to give George Sr. her brisket recipe; the kids try to resolve the feud.

George Sr. takes the boys on a road trip to see a space shuttle launch; Mary, Missy, and Meemaw have a girls weekend at the salon.