After tampering with Sheldon's Arctic-expedition data, the guys follow him back to Texas, which threatens Leonard's chances for romance with Penny.

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

Penny makes a surprising revelation about Leonard while on her date with Stuart; Wolowitz finds a critical design flaw in his NASA project.

While Leonard prepares for a three-month science expedition, he and Penny re-evaluate their feelings for each other.

After tampering with Sheldon's Arctic-expedition data, the guys follow him back to Texas, which threatens Leonard's chances for romance with Penny.

The Bulldogs focus on a league record.

Sheldon, Missy and Georgie adapt to new living arrangements; Meemaw opens a gambling room.

Sheldon and Dr. Linkletter struggle to solve an equation; Georgie has a solution for Meemaw's business woes; George Sr. gives advice on Missy's love life.

Missy asks some uncomfortable questions at church; Meemaw and Georgie go into business together.

Sheldon takes his first engineering class with Professor Boucher; Meemaw and Dale help take care of his ex-wife.

Penny learns there are fans of her performance in "Serial Ape-ist" when she and Leonard attend a Comic Con event; Amy hosts a brunch at Penny's apartment; Wolowitz makes an impulsive purchase.

The Bulldogs focus on a league record.

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

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

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

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

Brent, Lacey, Oscar, Hank, Davis, Karen, Wanda, and Emma are all getting a cartoon makeover as they return to Dog River for more adventures.

There's a food shortage at Corner Gas, causing a panic in Dog River; Lacey takes advantage of the situation by offering locals "exotic" recipes at The Ruby.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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

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

Brent, Lacey, Oscar, Hank, Davis, Karen, Wanda, and Emma are all getting a cartoon makeover as they return to Dog River for more adventures.

There's a food shortage at Corner Gas, causing a panic in Dog River; Lacey takes advantage of the situation by offering locals "exotic" recipes at The Ruby.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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

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

Brent, Lacey, Oscar, Hank, Davis, Karen, Wanda, and Emma are all getting a cartoon makeover as they return to Dog River for more adventures.

There's a food shortage at Corner Gas, causing a panic in Dog River; Lacey takes advantage of the situation by offering locals "exotic" recipes at The Ruby.

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.

Sheldon, Missy and Georgie adapt to new living arrangements; Meemaw opens a gambling room.

Sheldon and Dr. Linkletter struggle to solve an equation; Georgie has a solution for Meemaw's business woes; George Sr. gives advice on Missy's love life.

Missy asks some uncomfortable questions at church; Meemaw and Georgie go into business together.

Sheldon takes his first engineering class with Professor Boucher; Meemaw and Dale help take care of his ex-wife.

Penny and Leonard try to recover from an awkward hookup; Howard and Sheldon make a high-stakes bet.

Howard and Raj hit a Goth nightclub to meet women; Sheldon tries chocolate-based behavior modification on Penny.

Raj faces deportation if he does not find a job; Leonard and Penny deal with Howard as a third wheel.

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.

An email from the school banning certain Halloween costumes, including Mark's, sets off an argument between Dan and Darlene; Jackie introduces someone to the family at the Halloween party and insists that Dan vet him, but she immediately regrets it.

The friends renege on a promise not to bring dates to their New Year's Eve party.

Chandler learns details about his mother's (Morgan Fairchild) life when she appears on national television.

Rachel's Italian boyfriend tries to seduce Phoebe; Rachel accidentally reveals a secret to Ross; Monica's aunt refuses to take the lasagnas she ordered.

Phoebe's psychiatrist boyfriend (Fisher Stevens) annoys her friends with his analyses of their lives.

Penny and Leonard try to recover from an awkward hookup; Howard and Sheldon make a high-stakes bet.

Howard and Raj hit a Goth nightclub to meet women; Sheldon tries chocolate-based behavior modification on Penny.

Sheldon is determined to convince Amy they should procreate; Koothrappali is reluctant to tell the gang what the new woman he's dating does for a living.

Sheldon gets jealous when a co-worker wins an award; Wolowitz finds an old remote control Stephen Hawking action figure that he made.

Raj faces deportation if he does not find a job; Leonard and Penny deal with Howard as a third wheel.

An email from the school banning certain Halloween costumes, including Mark's, sets off an argument between Dan and Darlene; Jackie introduces someone to the family at the Halloween party and insists that Dan vet him, but she immediately regrets it.

Penny and Leonard try to recover from an awkward hookup; Howard and Sheldon make a high-stakes bet.

Howard and Raj hit a Goth nightclub to meet women; Sheldon tries chocolate-based behavior modification on Penny.

Raj faces deportation if he does not find a job; Leonard and Penny deal with Howard as a third wheel.

Sheldon is determined to convince Amy they should procreate; Koothrappali is reluctant to tell the gang what the new woman he's dating does for a living.

The friends renege on a promise not to bring dates to their New Year's Eve party.

Chandler learns details about his mother's (Morgan Fairchild) life when she appears on national television.

Rachel's Italian boyfriend tries to seduce Phoebe; Rachel accidentally reveals a secret to Ross; Monica's aunt refuses to take the lasagnas she ordered.

Phoebe's psychiatrist boyfriend (Fisher Stevens) annoys her friends with his analyses of their lives.

Sheldon is determined to convince Amy they should procreate; Koothrappali is reluctant to tell the gang what the new woman he's dating does for a living.

Sheldon gets jealous when a co-worker wins an award; Wolowitz finds an old remote control Stephen Hawking action figure that he made.

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.

An email from the school banning certain Halloween costumes, including Mark's, sets off an argument between Dan and Darlene; Jackie introduces someone to the family at the Halloween party and insists that Dan vet him, but she immediately regrets it.

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.

Wanda, Hank, and Lacey attempt to terrorize Brent with a Sasquatch hoax; Davis and Emma's obsession with a fantasy TV show called THRONE STRIFE forces Karen and Oscar to spend time together.

Brent and the citizens of Dog River are annoyed when Lacey tries to make them eat local; Davis tries to train bees; Wanda sells homemade candles.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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.

Wanda, Hank, and Lacey attempt to terrorize Brent with a Sasquatch hoax; Davis and Emma's obsession with a fantasy TV show called THRONE STRIFE forces Karen and Oscar to spend time together.

Brent and the citizens of Dog River are annoyed when Lacey tries to make them eat local; Davis tries to train bees; Wanda sells homemade candles.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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.

Wanda, Hank, and Lacey attempt to terrorize Brent with a Sasquatch hoax; Davis and Emma's obsession with a fantasy TV show called THRONE STRIFE forces Karen and Oscar to spend time together.

Brent and the citizens of Dog River are annoyed when Lacey tries to make them eat local; Davis tries to train bees; Wanda sells homemade candles.

When Geena learns that D.J. hasn't been taking Mary to church, she insists they go as a family; Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

The friends renege on a promise not to bring dates to their New Year's Eve party.

Chandler learns details about his mother's (Morgan Fairchild) life when she appears on national television.

Rachel's Italian boyfriend tries to seduce Phoebe; Rachel accidentally reveals a secret to Ross; Monica's aunt refuses to take the lasagnas she ordered.

Phoebe's psychiatrist boyfriend (Fisher Stevens) annoys her friends with his analyses of their lives.

Sheldon seeks revenge on his nemesis, Wil Wheaton; Wolowitz wants Penny to set him up with one of her friends.

Sheldon teaches Leonard how to understand football; a kite-fighting incident threatens Howard and Raj's friendship.

Sheldon tries to make peace when Leonard and Penny get into an argument.

When Geena learns that D.J. hasn't been taking Mary to church, she insists they go as a family; Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

A member of the family makes a life-changing announcement; Dan suspects Becky isn't holding up her end of the bargain with regard to her drinking; Darlene continues to look for a job; Jackie offers English lessons to a busboy.

It's Valentine's Day and, out on his first date in nine years, Ross meets up with his ex-wife. Meanwhile, Monica, Phoebe and Rachel rebel against the spirit of the day by burning mementos of past relationships.

A "high-spirited" restaurant owner wolfs down the gourmet meal Monica created as part of a job interview.

Joey asks Phoebe's sister (Lisa Kudrow in a dual role) on a date; Ross takes Lamaze classes with Carol (Jane Sibbett) and Susan (Jessica Hecht).

Monica takes Rachel to the hospital; Ross asks his dad (Elliott Gould) for advice on becoming a father.

Sheldon seeks revenge on his nemesis, Wil Wheaton; Wolowitz wants Penny to set him up with one of her friends.

Sheldon teaches Leonard how to understand football; a kite-fighting incident threatens Howard and Raj's friendship.

Sheldon and Leonard disagree about how to divide their shared belongings; Koothrappali and Stuart fight to be the most helpful to Bernadette during her final weeks of pregnancy.

While Howard and Bernadette welcome their new baby into the world, Amy celebrates her own birthday with Sheldon.

Sheldon tries to make peace when Leonard and Penny get into an argument.

A member of the family makes a life-changing announcement; Dan suspects Becky isn't holding up her end of the bargain with regard to her drinking; Darlene continues to look for a job; Jackie offers English lessons to a busboy.

Sheldon seeks revenge on his nemesis, Wil Wheaton; Wolowitz wants Penny to set him up with one of her friends.

Sheldon teaches Leonard how to understand football; a kite-fighting incident threatens Howard and Raj's friendship.

Sheldon tries to make peace when Leonard and Penny get into an argument.

Sheldon and Leonard disagree about how to divide their shared belongings; Koothrappali and Stuart fight to be the most helpful to Bernadette during her final weeks of pregnancy.

It's Valentine's Day and, out on his first date in nine years, Ross meets up with his ex-wife. Meanwhile, Monica, Phoebe and Rachel rebel against the spirit of the day by burning mementos of past relationships.

A "high-spirited" restaurant owner wolfs down the gourmet meal Monica created as part of a job interview.

Joey asks Phoebe's sister (Lisa Kudrow in a dual role) on a date; Ross takes Lamaze classes with Carol (Jane Sibbett) and Susan (Jessica Hecht).

Monica takes Rachel to the hospital; Ross asks his dad (Elliott Gould) for advice on becoming a father.

Sheldon and Leonard disagree about how to divide their shared belongings; Koothrappali and Stuart fight to be the most helpful to Bernadette during her final weeks of pregnancy.

While Howard and Bernadette welcome their new baby into the world, Amy celebrates her own birthday with Sheldon.

When Geena learns that D.J. hasn't been taking Mary to church, she insists they go as a family; Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

A member of the family makes a life-changing announcement; Dan suspects Becky isn't holding up her end of the bargain with regard to her drinking; Darlene continues to look for a job; Jackie offers English lessons to a busboy.

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.

Wanda and Lacey entice the residents of Dog River with clickbait texts, while Oscar sets up a bait shop across the street from Corner Gas to teach Brent a business lesson; Davis and Karen involve Hank in a training exercise with chaotic results.

The sewer system backs up and causes chaos; Emma tries to trick Oscar into getting an updated family portrait.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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.

Wanda and Lacey entice the residents of Dog River with clickbait texts, while Oscar sets up a bait shop across the street from Corner Gas to teach Brent a business lesson; Davis and Karen involve Hank in a training exercise with chaotic results.

The sewer system backs up and causes chaos; Emma tries to trick Oscar into getting an updated family portrait.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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.

Wanda and Lacey entice the residents of Dog River with clickbait texts, while Oscar sets up a bait shop across the street from Corner Gas to teach Brent a business lesson; Davis and Karen involve Hank in a training exercise with chaotic results.

The sewer system backs up and causes chaos; Emma tries to trick Oscar into getting an updated family portrait.

Jackie convinces Dan to build a chicken coop in the backyard so the family can eat organic eggs; Becky meets with Andrea for the first time since the surrogacy mishap; Darlene deals with a sleazy customer at her casino job.

It's Valentine's Day and, out on his first date in nine years, Ross meets up with his ex-wife. Meanwhile, Monica, Phoebe and Rachel rebel against the spirit of the day by burning mementos of past relationships.

A "high-spirited" restaurant owner wolfs down the gourmet meal Monica created as part of a job interview.

Joey asks Phoebe's sister (Lisa Kudrow in a dual role) on a date; Ross takes Lamaze classes with Carol (Jane Sibbett) and Susan (Jessica Hecht).

Monica takes Rachel to the hospital; Ross asks his dad (Elliott Gould) for advice on becoming a father.

Penny is forced to rely on Sheldon when she is injured while Howard, Leonard and Raj are away.

After being humiliated on the radio, Sheldon vows to destroy Kripke; Wolowitz tries to not ruin his new relationship with Bernadette.

Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend.

Jackie convinces Dan to build a chicken coop in the backyard so the family can eat organic eggs; Becky meets with Andrea for the first time since the surrogacy mishap; Darlene deals with a sleazy customer at her casino job.

Dan questions Peter's motives when he learns about the pricey Christmas gift Jackie purchased for her new, unemployed beau; Mark and Mary write up their Christmas wish lists; Darlene receives advice from an unlikely source.

Ted, Marshall and Barney get together to watch the "Star Wars" trilogy and consider their futures; Barney and Quinn move in together.

As Ted settles into living alone, Barney tries to get him to hit the town every night; Lily has an erotic dream; Robin becomes famous.

Marshall panics when he realizes the baby is coming soon; Robin and Ted decide to come to terms with their relationship; Barney plans a road trip.

Lily goes into labor while Marshall and Barney are in Atlantic City; Robin and Ted try to distract Lily from her labor pains.

Penny is forced to rely on Sheldon when she is injured while Howard, Leonard and Raj are away.

After being humiliated on the radio, Sheldon vows to destroy Kripke; Wolowitz tries to not ruin his new relationship with Bernadette.

Penny thinks Leonard is taking her for granted and decides to go on a spa weekend with Amy; Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby's room.

Sheldon tests an MIT invention after hearing it can help him read people's emotions; Leonard finds out Penny's brother is coming to town; Raj asks his ex-girlfriends to give him dating advice.

Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend.

Dan questions Peter's motives when he learns about the pricey Christmas gift Jackie purchased for her new, unemployed beau; Mark and Mary write up their Christmas wish lists; Darlene receives advice from an unlikely source.

Penny is forced to rely on Sheldon when she is injured while Howard, Leonard and Raj are away.

After being humiliated on the radio, Sheldon vows to destroy Kripke; Wolowitz tries to not ruin his new relationship with Bernadette.

Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend.

Penny thinks Leonard is taking her for granted and decides to go on a spa weekend with Amy; Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby's room.

Ted, Marshall and Barney get together to watch the "Star Wars" trilogy and consider their futures; Barney and Quinn move in together.

As Ted settles into living alone, Barney tries to get him to hit the town every night; Lily has an erotic dream; Robin becomes famous.

Marshall panics when he realizes the baby is coming soon; Robin and Ted decide to come to terms with their relationship; Barney plans a road trip.

Lily goes into labor while Marshall and Barney are in Atlantic City; Robin and Ted try to distract Lily from her labor pains.

Penny thinks Leonard is taking her for granted and decides to go on a spa weekend with Amy; Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby's room.

Sheldon tests an MIT invention after hearing it can help him read people's emotions; Leonard finds out Penny's brother is coming to town; Raj asks his ex-girlfriends to give him dating advice.

Jackie convinces Dan to build a chicken coop in the backyard so the family can eat organic eggs; Becky meets with Andrea for the first time since the surrogacy mishap; Darlene deals with a sleazy customer at her casino job.

Dan questions Peter's motives when he learns about the pricey Christmas gift Jackie purchased for her new, unemployed beau; Mark and Mary write up their Christmas wish lists; Darlene receives advice from an unlikely source.

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.

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.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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.

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.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

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.

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.

Becky helps Harris keep a secret from Darlene, which causes a rift between the sisters; Jackie supports Peter with his project; Dan and an old friend reunite.

Ted, Marshall and Barney get together to watch the "Star Wars" trilogy and consider their futures; Barney and Quinn move in together.

As Ted settles into living alone, Barney tries to get him to hit the town every night; Lily has an erotic dream; Robin becomes famous.

Marshall panics when he realizes the baby is coming soon; Robin and Ted decide to come to terms with their relationship; Barney plans a road trip.

Lily goes into labor while Marshall and Barney are in Atlantic City; Robin and Ted try to distract Lily from her labor pains.

Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics.

After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

Sheldon tries to figure out the answer to a physics problem by working with Penny.

Becky helps Harris keep a secret from Darlene, which causes a rift between the sisters; Jackie supports Peter with his project; Dan and an old friend reunite.

When Dan gets injured while covering D.J.'s vending machine route, the decision to sue the company could cost D.J. his job; Jackie is appalled when Becky seeks life coaching from her nemesis.

On Barney's wedding day, the friends remember the time they encouraged Ted to go after the one that got away.

Ted recounts a story about leaving a note for Victoria's ex-fiance (Thomas Lennon) in hope of calming Robin, who is anxious on her and Barney's wedding day.

When Barney prepares a comprehensive pre-nup, the other guys decide to propose relationship amendments to their significant others; Quinn is furious and makes a pre-nup of her own.

Marshall and Lily discover their trouble finding a nanny is a result of one of Barney's schemes; Ted and Robin argue over whose relationship is more serious.

Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics.

After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system; Raj and Stuart look after baby Halley while Penny and Amy take Bernadette for a night out.

Sheldon and Amy have their first fight since moving in together; Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father.

Conan travels to Japan to learn about the country's culture.

Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics.

After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

Sheldon tries to figure out the answer to a physics problem by working with Penny.

Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system; Raj and Stuart look after baby Halley while Penny and Amy take Bernadette for a night out.

On Barney's wedding day, the friends remember the time they encouraged Ted to go after the one that got away.

Ted recounts a story about leaving a note for Victoria's ex-fiance (Thomas Lennon) in hope of calming Robin, who is anxious on her and Barney's wedding day.

When Barney prepares a comprehensive pre-nup, the other guys decide to propose relationship amendments to their significant others; Quinn is furious and makes a pre-nup of her own.

Marshall and Lily discover their trouble finding a nanny is a result of one of Barney's schemes; Ted and Robin argue over whose relationship is more serious.

Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system; Raj and Stuart look after baby Halley while Penny and Amy take Bernadette for a night out.

Sheldon and Amy have their first fight since moving in together; Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father.

Becky helps Harris keep a secret from Darlene, which causes a rift between the sisters; Jackie supports Peter with his project; Dan and an old friend reunite.

When Dan gets injured while covering D.J.'s vending machine route, the decision to sue the company could cost D.J. his job; Jackie is appalled when Becky seeks life coaching from her nemesis.

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.

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.

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

Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.

Sheldon ends up in traffic court after getting a ticket because of Penny.

When the guys buy a ring from "The Lord of the Rings" at a garage sale, the item threatens to tear them apart.

Sheldon's stage fright stands between him and a coveted award.

Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off once again.

Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.

Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.

Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.

When Sheldon searches for an alternative to human companionship, the guys become concerned.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.

Sheldon ends up in traffic court after getting a ticket because of Penny.

When the guys buy a ring from "The Lord of the Rings" at a garage sale, the item threatens to tear them apart.

Sheldon's stage fright stands between him and a coveted award.

Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off once again.

Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.

Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.

Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.

When Sheldon searches for an alternative to human companionship, the guys become concerned.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.

Sheldon ends up in traffic court after getting a ticket because of Penny.

When the guys buy a ring from "The Lord of the Rings" at a garage sale, the item threatens to tear them apart.

Sheldon's stage fright stands between him and a coveted award.

Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off once again.

Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.

Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.

Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.

When Sheldon searches for an alternative to human companionship, the guys become concerned.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

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

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.

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.

Oscar tries to catch a mouse; Brent and Hank invent a new game.

When the girls lose money to the guys in a poker match they seek out Monica's Aunt Iris, a famous card player, for lessons and then demand a rematch.

Rachel accidentally lets Ross' pet monkey escape, and the friends form a search party; she is then horrified to learn that her former best friend is engaged to her ex-fiance.

Rachel is asked to be the maid of honor in her ex-fiance's (Mitchell Whitfield) wedding.

Monica, Rachel and Phoebe go on a covert operation to track down the woman who stole Monica's credit card.

Monica's new boyfriend (Stan Kirsch) exposes his own secret after she admits her true age.

Carol (Jane Sibbett) begins labor; Ross and Susan (Jessica Hecht) clash.

Rachel discovers Ross' feelings for her when he goes out of town on a business trip.

Rachel decides to look up her former boyfriend (Cosimo Fusco) when she is distraught over Ross' new girlfriend (Lauren Tom).

While tending his son, Ross expresses his displeasure when Phoebe tastes Carol's breast milk to check the temperature.

Monica and Rachel's grumpy downstairs neighbor (Larry Hankin) dies and leaves all his belongings to the girls.

The group is amazed when Phoebe marries a Canadian ice dancer (Steve Zahn) to help him get his green card.

The group's plans of throwing a birthday party are marred when money becomes an issue; Chandler sets a woman up to get a date with her, but a case of mistaken identities means that he discovers what she really thought of him.

Joey and Chandler decide to baby-sit and use Ben as a way to pick up women; Phoebe loses her job singing at Central Perk.

A drunken Rachel leaves a phone message for Ross that may change their relationship; Chandler regrets asking Monica to help him lose weight.

When the girls lose money to the guys in a poker match they seek out Monica's Aunt Iris, a famous card player, for lessons and then demand a rematch.

Rachel accidentally lets Ross' pet monkey escape, and the friends form a search party; she is then horrified to learn that her former best friend is engaged to her ex-fiance.

Rachel is asked to be the maid of honor in her ex-fiance's (Mitchell Whitfield) wedding.

Monica, Rachel and Phoebe go on a covert operation to track down the woman who stole Monica's credit card.

Monica's new boyfriend (Stan Kirsch) exposes his own secret after she admits her true age.

Carol (Jane Sibbett) begins labor; Ross and Susan (Jessica Hecht) clash.

Rachel discovers Ross' feelings for her when he goes out of town on a business trip.

Rachel decides to look up her former boyfriend (Cosimo Fusco) when she is distraught over Ross' new girlfriend (Lauren Tom).

While tending his son, Ross expresses his displeasure when Phoebe tastes Carol's breast milk to check the temperature.

Monica and Rachel's grumpy downstairs neighbor (Larry Hankin) dies and leaves all his belongings to the girls.

The group is amazed when Phoebe marries a Canadian ice dancer (Steve Zahn) to help him get his green card.

The group's plans of throwing a birthday party are marred when money becomes an issue; Chandler sets a woman up to get a date with her, but a case of mistaken identities means that he discovers what she really thought of him.

Joey and Chandler decide to baby-sit and use Ben as a way to pick up women; Phoebe loses her job singing at Central Perk.

A drunken Rachel leaves a phone message for Ross that may change their relationship; Chandler regrets asking Monica to help him lose weight.

When the girls lose money to the guys in a poker match they seek out Monica's Aunt Iris, a famous card player, for lessons and then demand a rematch.

Rachel accidentally lets Ross' pet monkey escape, and the friends form a search party; she is then horrified to learn that her former best friend is engaged to her ex-fiance.

Rachel is asked to be the maid of honor in her ex-fiance's (Mitchell Whitfield) wedding.

Monica, Rachel and Phoebe go on a covert operation to track down the woman who stole Monica's credit card.

Monica's new boyfriend (Stan Kirsch) exposes his own secret after she admits her true age.

Carol (Jane Sibbett) begins labor; Ross and Susan (Jessica Hecht) clash.

Rachel discovers Ross' feelings for her when he goes out of town on a business trip.

Rachel decides to look up her former boyfriend (Cosimo Fusco) when she is distraught over Ross' new girlfriend (Lauren Tom).

While tending his son, Ross expresses his displeasure when Phoebe tastes Carol's breast milk to check the temperature.

Monica and Rachel's grumpy downstairs neighbor (Larry Hankin) dies and leaves all his belongings to the girls.

The group is amazed when Phoebe marries a Canadian ice dancer (Steve Zahn) to help him get his green card.

The group's plans of throwing a birthday party are marred when money becomes an issue; Chandler sets a woman up to get a date with her, but a case of mistaken identities means that he discovers what she really thought of him.

Joey and Chandler decide to baby-sit and use Ben as a way to pick up women; Phoebe loses her job singing at Central Perk.

A drunken Rachel leaves a phone message for Ross that may change their relationship; Chandler regrets asking Monica to help him lose weight.

Lacey sets up an employee of the month program; Hank takes up a new hobby, and drives Emma crazy.

Hank believes he can run a gumball business, but Oscar lends his help and a hidden talent from Karen helps it succeed.

Hank and Oscar team up to build a shelter for the apocalypse and Davis, Karen and Wanda argue over who would be the best leader; Emma traps Brent and Lacey in the cellar so they can hash things out.

Hank and Brent restore a vintage car; Karen deals with a stray cat; Emma and Lacey paint over some graffiti.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Ben picks up a professional mentalist and Andrew Zimmern; he tests one group's knowledge.

Lacey sets up an employee of the month program; Hank takes up a new hobby, and drives Emma crazy.

Hank believes he can run a gumball business, but Oscar lends his help and a hidden talent from Karen helps it succeed.

Hank and Oscar team up to build a shelter for the apocalypse and Davis, Karen and Wanda argue over who would be the best leader; Emma traps Brent and Lacey in the cellar so they can hash things out.

Hank and Brent restore a vintage car; Karen deals with a stray cat; Emma and Lacey paint over some graffiti.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Ben picks up a professional mentalist and Andrew Zimmern; he tests one group's knowledge.

Lacey sets up an employee of the month program; Hank takes up a new hobby, and drives Emma crazy.

Hank believes he can run a gumball business, but Oscar lends his help and a hidden talent from Karen helps it succeed.

Hank and Oscar team up to build a shelter for the apocalypse and Davis, Karen and Wanda argue over who would be the best leader; Emma traps Brent and Lacey in the cellar so they can hash things out.

Hank and Brent restore a vintage car; Karen deals with a stray cat; Emma and Lacey paint over some graffiti.

When Ben offers Mark free piano lessons, Darlene uses it as an opportunity to test his parenting skills; Jackie throws Becky a baby shower; Emilio continues his efforts to be part of the baby's life.

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.

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.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.

While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.

When Ben offers Mark free piano lessons, Darlene uses it as an opportunity to test his parenting skills; Jackie throws Becky a baby shower; Emilio continues his efforts to be part of the baby's life.

As Darlene grapples with a life-changing offer from Ben, an unexpected conversation with David turns her world even more upside down; relationship problems lead Jackie to the bottom of the bottle; Dan delivers alarming news.

Sheldon battles President Hagemeyer's mysterious boss over the university's science requirements; Mary discovers that Georgie is working at Meemaw's illegal gambling room.

Sheldon gets the science yips and has to learn how to not think; George Sr. plays handyman at Brenda Sparks' house.

Sheldon gets a dorm room all to himself; Meemaw gains an unwanted business partner.

Sheldon acts as Mary's spy during a youth lock-in at church; Georgie is attracted to an older woman.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.

Cut off from his father's fortune, Koothrappali appoints Sheldon to help him get out of debt; Penny considers joining Leonard at Comic-Con.

Shoresy moves to Sudbury, Canada, to join a senior AAA hockey team in his quest to never lose again.

While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.

As Darlene grapples with a life-changing offer from Ben, an unexpected conversation with David turns her world even more upside down; relationship problems lead Jackie to the bottom of the bottle; Dan delivers alarming news.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.

While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.

Shoresy moves to Sudbury, Canada, to join a senior AAA hockey team in his quest to never lose again.

Sheldon battles President Hagemeyer's mysterious boss over the university's science requirements; Mary discovers that Georgie is working at Meemaw's illegal gambling room.

Sheldon gets the science yips and has to learn how to not think; George Sr. plays handyman at Brenda Sparks' house.

Sheldon gets a dorm room all to himself; Meemaw gains an unwanted business partner.

Sheldon acts as Mary's spy during a youth lock-in at church; Georgie is attracted to an older woman.

Cut off from his father's fortune, Koothrappali appoints Sheldon to help him get out of debt; Penny considers joining Leonard at Comic-Con.

Shoresy moves to Sudbury, Canada, to join a senior AAA hockey team in his quest to never lose again.

When Ben offers Mark free piano lessons, Darlene uses it as an opportunity to test his parenting skills; Jackie throws Becky a baby shower; Emilio continues his efforts to be part of the baby's life.

As Darlene grapples with a life-changing offer from Ben, an unexpected conversation with David turns her world even more upside down; relationship problems lead Jackie to the bottom of the bottle; Dan delivers alarming news.

Brents finds a way to stop Oscar from saying the J-word, but discovers it might not have been so bad.

Hank and Davis lead the fight against a call center that might come to Dog River.

Hank accidentally punches Brent and it is agreed that Brent can punch him back.

Lacey tries to get a photo of a blue moon sunrise with Brent, but it turns awkward; Hank is suspicious about Oscar being nice to Emma; Davis and Wanda argue about a new book.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Brents finds a way to stop Oscar from saying the J-word, but discovers it might not have been so bad.

Hank and Davis lead the fight against a call center that might come to Dog River.

Hank accidentally punches Brent and it is agreed that Brent can punch him back.

Lacey tries to get a photo of a blue moon sunrise with Brent, but it turns awkward; Hank is suspicious about Oscar being nice to Emma; Davis and Wanda argue about a new book.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Brents finds a way to stop Oscar from saying the J-word, but discovers it might not have been so bad.

Hank and Davis lead the fight against a call center that might come to Dog River.

Hank accidentally punches Brent and it is agreed that Brent can punch him back.

Lacey tries to get a photo of a blue moon sunrise with Brent, but it turns awkward; Hank is suspicious about Oscar being nice to Emma; Davis and Wanda argue about a new book.

In the wake of Emilio's deportation, Jackie steps into the role of a paternal figure and creates a meticulous birth plan for Becky; Darlene is tangled in a complex love triangle with David and Ben; Harris is caught up in a problem of her own.

Sheldon battles President Hagemeyer's mysterious boss over the university's science requirements; Mary discovers that Georgie is working at Meemaw's illegal gambling room.

Sheldon gets the science yips and has to learn how to not think; George Sr. plays handyman at Brenda Sparks' house.

Sheldon gets a dorm room all to himself; Meemaw gains an unwanted business partner.

Sheldon acts as Mary's spy during a youth lock-in at church; Georgie is attracted to an older woman.

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

The guys try to bond with Penny's new boyfriend through a costume contest.

In the wake of Emilio's deportation, Jackie steps into the role of a paternal figure and creates a meticulous birth plan for Becky; Darlene is tangled in a complex love triangle with David and Ben; Harris is caught up in a problem of her own.

Darlene struggles to decide between David and Ben; Becky begins to doubt herself as a mom; Mark gets in trouble at school when a picture of him and his boyfriend kissing goes viral; Jackie avoids her problems by keeping busy with everyone else's.

Rachel sees Ross' list comparing her pros and cons to Julie's (Lauren Tom).

Phoebe, hoping for a Christmas family reunion, travels to upstate New York in search of her biological father.

After deciding to give up acting, Joey is offered a role in a soap opera; Rachel dates a guy named Russ.

Ross helps put Carol and Susan's wedding plans back on track; Rachel's mother announces shocking new plans.

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

Leonard, Penny and Raj settle into their new living arrangement; Sheldon expresses interest in Amy's work.

Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day; Bernadette nears the end of her maternity leave and must return to work.

The guys try to bond with Penny's new boyfriend through a costume contest.

Darlene struggles to decide between David and Ben; Becky begins to doubt herself as a mom; Mark gets in trouble at school when a picture of him and his boyfriend kissing goes viral; Jackie avoids her problems by keeping busy with everyone else's.

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

The guys try to bond with Penny's new boyfriend through a costume contest.

Leonard, Penny and Raj settle into their new living arrangement; Sheldon expresses interest in Amy's work.

Rachel sees Ross' list comparing her pros and cons to Julie's (Lauren Tom).

Phoebe, hoping for a Christmas family reunion, travels to upstate New York in search of her biological father.

After deciding to give up acting, Joey is offered a role in a soap opera; Rachel dates a guy named Russ.

Ross helps put Carol and Susan's wedding plans back on track; Rachel's mother announces shocking new plans.

Leonard, Penny and Raj settle into their new living arrangement; Sheldon expresses interest in Amy's work.

Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day; Bernadette nears the end of her maternity leave and must return to work.

In the wake of Emilio's deportation, Jackie steps into the role of a paternal figure and creates a meticulous birth plan for Becky; Darlene is tangled in a complex love triangle with David and Ben; Harris is caught up in a problem of her own.

Darlene struggles to decide between David and Ben; Becky begins to doubt herself as a mom; Mark gets in trouble at school when a picture of him and his boyfriend kissing goes viral; Jackie avoids her problems by keeping busy with everyone else's.

Lacey is suspicious of the illegal duplication of Dog River money; Hank gets a case of pink eye, causing Brent and Wanda to panic in Corner Gas; Karen is frustrated with Davis.

Emma goes Christmas shopping early making everyone curious to find out what they are getting.

Lacey is frustrated with the new party planning methods; Wanda convinces Brent and Hank to take high school tests to see who is smarter.

The women can't get rid of Hank from a girls-only event; Brent stocks a new drink and Wanda is attracted to its cardboard promotion.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Lacey is suspicious of the illegal duplication of Dog River money; Hank gets a case of pink eye, causing Brent and Wanda to panic in Corner Gas; Karen is frustrated with Davis.

Emma goes Christmas shopping early making everyone curious to find out what they are getting.

Lacey is frustrated with the new party planning methods; Wanda convinces Brent and Hank to take high school tests to see who is smarter.

The women can't get rid of Hank from a girls-only event; Brent stocks a new drink and Wanda is attracted to its cardboard promotion.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host, Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Lacey is suspicious of the illegal duplication of Dog River money; Hank gets a case of pink eye, causing Brent and Wanda to panic in Corner Gas; Karen is frustrated with Davis.

Emma goes Christmas shopping early making everyone curious to find out what they are getting.

Lacey is frustrated with the new party planning methods; Wanda convinces Brent and Hank to take high school tests to see who is smarter.

The women can't get rid of Hank from a girls-only event; Brent stocks a new drink and Wanda is attracted to its cardboard promotion.

Harris is forced to confront Darlene about her lifestyle; Jackie involves herself in other people's problems to avoid confronting her own; Becky is overwhelmed by the costs of raising a baby, so her family steps in to help.

Rachel sees Ross' list comparing her pros and cons to Julie's (Lauren Tom).

Phoebe, hoping for a Christmas family reunion, travels to upstate New York in search of her biological father.

After deciding to give up acting, Joey is offered a role in a soap opera; Rachel dates a guy named Russ.

Ross helps put Carol and Susan's wedding plans back on track; Rachel's mother announces shocking new plans.

Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.

Harris is forced to confront Darlene about her lifestyle; Jackie involves herself in other people's problems to avoid confronting her own; Becky is overwhelmed by the costs of raising a baby, so her family steps in to help.

Desperate for more income, Becky seeks a bartending position at Casita Bonita, causing major concern for Dan due to her struggle with alcoholism; Darlene finally nears a decision between David and Ben; Harris' new friend, Odessa, means new trouble.

Joey starts dating a fan (Brooke Shields) who is gorgeous, but soon discovers that she's also crazy; Ross is reminded how much he misses his pet monkey and travels to the San Diego Zoo to find out what has happened to him.

Ross (David Schwimmer) catches up with Marcel on the set of a movie starring Jean-Claude Van Damme; Chandler gets a date with a girl he liked in fourth grade.

Monica's parents drop off some childhood keepsakes including her prom video.

Everyone at Monica's dad's birthday party finds it amusing that their middle-aged friend (Tom Selleck) is dating a woman in her 20s until Monica's parents learn that it is their daughter; Chandler and Joey argue over a dirty spoon.

Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Howard and Bernadette struggle to leave Halley in day care; Bert introduces the gang to his new girlfriend, Rebecca.

Leonard is less than thrilled when Penny considers accepting a job offer from Zack, her ex-boyfriend.

Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.

Desperate for more income, Becky seeks a bartending position at Casita Bonita, causing major concern for Dan due to her struggle with alcoholism; Darlene finally nears a decision between David and Ben; Harris' new friend, Odessa, means new trouble.

Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.

Howard and Bernadette struggle to leave Halley in day care; Bert introduces the gang to his new girlfriend, Rebecca.

Joey starts dating a fan (Brooke Shields) who is gorgeous, but soon discovers that she's also crazy; Ross is reminded how much he misses his pet monkey and travels to the San Diego Zoo to find out what has happened to him.

Ross (David Schwimmer) catches up with Marcel on the set of a movie starring Jean-Claude Van Damme; Chandler gets a date with a girl he liked in fourth grade.

Monica's parents drop off some childhood keepsakes including her prom video.

Everyone at Monica's dad's birthday party finds it amusing that their middle-aged friend (Tom Selleck) is dating a woman in her 20s until Monica's parents learn that it is their daughter; Chandler and Joey argue over a dirty spoon.

Howard and Bernadette struggle to leave Halley in day care; Bert introduces the gang to his new girlfriend, Rebecca.

Leonard is less than thrilled when Penny considers accepting a job offer from Zack, her ex-boyfriend.

Harris is forced to confront Darlene about her lifestyle; Jackie involves herself in other people's problems to avoid confronting her own; Becky is overwhelmed by the costs of raising a baby, so her family steps in to help.

Desperate for more income, Becky seeks a bartending position at Casita Bonita, causing major concern for Dan due to her struggle with alcoholism; Darlene finally nears a decision between David and Ben; Harris' new friend, Odessa, means new trouble.

Karen and Davis figure out a way to get Emma to do free cleaning.

Oscar and Emma discover an easy way to make some fast money; Davis decides to take off with Brent's car.

At the Summer Solstice Deck Party, the locals compete for a seat in the sun, Brent sells popsicles and Karen and Davis must share a gun.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Karen and Davis figure out a way to get Emma to do free cleaning.

Oscar and Emma discover an easy way to make some fast money; Davis decides to take off with Brent's car.

At the Summer Solstice Deck Party, the locals compete for a seat in the sun, Brent sells popsicles and Karen and Davis must share a gun.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be shocked when they discover that they're instant contestants. The host,Adam Grove, asks the passengers trivia questions as he escorts them to their destination.

Karen and Davis figure out a way to get Emma to do free cleaning.

Oscar and Emma discover an easy way to make some fast money; Davis decides to take off with Brent's car.

At the Summer Solstice Deck Party, the locals compete for a seat in the sun, Brent sells popsicles and Karen and Davis must share a gun.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Halloween brings nothing but horror for Jackie after she uncovers a shocking secret when trying to reopen the Lunch Box; Mary gets upset when a woman assumes she is adopted; Darlene continues to deal with her complicated love life.

Joey starts dating a fan (Brooke Shields) who is gorgeous, but soon discovers that she's also crazy; Ross is reminded how much he misses his pet monkey and travels to the San Diego Zoo to find out what has happened to him.

Ross (David Schwimmer) catches up with Marcel on the set of a movie starring Jean-Claude Van Damme; Chandler gets a date with a girl he liked in fourth grade.

Monica's parents drop off some childhood keepsakes including her prom video.

Everyone at Monica's dad's birthday party finds it amusing that their middle-aged friend (Tom Selleck) is dating a woman in her 20s until Monica's parents learn that it is their daughter; Chandler and Joey argue over a dirty spoon.

A wealthy donor makes Leonard question what he is willing to do for science.

Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.

Sheldon is upset when he realizes Leonard is the center of their group of friends.

Halloween brings nothing but horror for Jackie after she uncovers a shocking secret when trying to reopen the Lunch Box; Mary gets upset when a woman assumes she is adopted; Darlene continues to deal with her complicated love life.

Jackie and Becky pitch their business plan to Darlene in hopes of getting the Lunch Box back, but Darlene's decision leads to hostility; Dan bans Odessa from the house, causing a rift with Harris; Mark makes extensive Thanksgiving plans.

Lily and Marshall test their friends to see who would be the best godparents.

As Ted and Victoria consider the future of their relationship, Ted asks Lily and Marshall for advice; Robin is concerned when she learns that Barney's new wingman is a dog.