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.

When a doubting young boy takes a train ride to the North Pole, he embarks on a journey of self-discovery that shows him that the wonder of life never fades for those who believe.

When a doubting young boy takes a train ride to the North Pole, he embarks on a journey of self-discovery that shows him that the wonder of life never fades for those who believe.

Claire and Phil decide to plan the biggest and best birthday party for Luke.

Claire and Phil threaten to take away Christmas when the kids get into trouble; Cameron and Mitchell take Lily to have her first picture taken with Santa.

Gloria does not like Jay's reaction to the arrival of Manny's father (Benjamin Bratt); Phil is rushed to the hospital; Mitchell and Cameron try to sleep-train Lily.

When Claire finds a dirty picture on the computer and assumes it is Luke's doing, guilty Phil does not correct her; Jay and Gloria disagree over his beloved, life-size dog butler statue; Cameron involves himself in the gardener's woes.

Mitchell plants an idea in Jay's head; Manny's date gets a makeover from Gloria.

A visit from an old friend (Minnie Driver) leaves Claire feeling inadequate; Mitchell tries to help Gloria with some legal issues.

Claire and Phil plan a Valentine's Day excursion; Jay takes Gloria to a comedy show; Cameron and Mitchell try to play cupid for Manny.

Phil tries to conquer his fear of the dark when he and Luke go on a discovery expedition underneath the house; Mitchell and Cameron invite Lily's pediatrician over for brunch.

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, June.

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.

Monica and Phoebe make a bet after Rachel passes her delivery date; Chandler falls asleep at the premiere screening of Joey's new film.

Rachel goes into labor, enduring endless pain while anxious Ross hovers nearby and her waiting friends wreak havoc in the hospital.

After Rachel gives birth to her baby, she must confront relationship issues around her.

Joey finds himself engaged to Rachel soon after she delivers her baby girl, while Phoebe assumes Ross is the one who proposed; Joey sneaks a peek as Rachel tries unsuccessfully to nurse; Monica and Chandler retire to a supply closet for privacy.

Joey seeks forgiveness from Ross, while Rachel tries to quell Emma's incessant crying.

Emma's pediatrician drops her as a patient because of Rachel's constant calls.

Monica fears Chandler has a sexual fetish involving sharks; Phoebe fears losing her boyfriend.

While Phoebe and Joey wait at a fancy restaurant to celebrate Phoebe's birthday, Rachel is afraid to leave her infant with a babysitter; Monica and Chandler also fail to arrive on time after they fight over Chandler's urge to resume smoking.

Ross mocks Rachel's new male nanny (Freddie Prinze Jr.); Chandler becomes upset when Monica says that somebody from her job is the funniest guy she's ever met.

Chandler and Joey find a videotape while checking out Richard's apartment; Ross sings Emma an off-color lullaby.

Rachel has a bone to pick with her self-centered sister (Christina Applegate) on Thanksgiving; Monica protects her good wedding china; Joey forgets to join his TV cast mates for the Thanksgiving parade.

Rachel impulsively gives her telephone number to a handsome guy but worries he will call when Ross is there.

Monica fears the worst when she learns Chandler will be spending Christmas in Tulsa working on a deadline with a beautiful co-worker (Selma Blair).

Amy lies about repairs being made to her apartment so she can continue living with Sheldon; Leonard lets Penny decorate Sheldon's old room.

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.

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 and Amy visit Penny and Leonard after the holidays and tell them about their terrible trip to Texas.

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.

A New York policeman (Bruce Willis) outwits foreign thugs holding his wife (Bonnie Bedelia) and others in a Los Angeles high-rise.

Adopted as a baby by one of Santa's elves (Bob Newhart), a man (Will Ferrell) leaves the workshop to search for his family in New York.

The yuletide season brings headaches for Santa Claus, who bails his ne'er-do-well brother Fred out of trouble and puts him to work in his factory.

Feeling sad and unwanted, Santa takes the day off before Christmas; voices: Mickey Rooney, Shirley Booth; animated.

The Jokers are back taking offense at baristas and reading unusual product reviews; one Joker will be punished by provoking diners with one difficult task.

Kicking good people out and stealing from strangers is what's on the agenda for the Jokers; one of them ruins the entire night of a whole sports bar.

The Jokers are snagging tips and spinning the Wheel of Doom to determine who will be the losing Joker, who will be excusing his bad behavior with a very generous compensation.

From bombing job interviews to trashing their Nona's sauce, the Jokers are not on their game; one Loser is punished by confronting cellphone users.

Busy week for the Jokers as they fake their marriage and interview folks for an upcoming lifestyle article, but one Loser couldn't keep up and will be forced to curse out in tonight's punishment.

Reporting crimes and disrupting mealtimes in new challenges, but in the end, one Joker has to shed light onto something or someone important to complete his punishment.

The Jokers are hiding from their boss; they try to get away with sending bizarre emails; one loser won't make it through and is caught red handed messing with women's purses.

The Jokers come in hot and correct rude behavior but not before adding an unusual fee to customers' bills; one of them couldn't wrap his mind around winning, so he must wrap his legs around something else.

Zombie scare actors, a blended family, and a pair of hopeful Chiropractors take on the Wipeout course.

A look at who will triumph with no one to rely on but themselves, Sergeant Stripper, the Swallower, the Cruise Director, or Dances with Whales.

Phil invites his high school girlfriend (Judy Greer) to the house; Jay accidentally kills Manny's pet turtle, then goes to extremes to cover his tracks; overworked Mitchell stands up to his boss.

Claire and Phil each take on one of the kids' school projects; Gloria and Cameron bond during a night out.

The release of a new product Phil wants coincides with his birthday; Mitchell has a newfound desire to toughen up; Cameron gets involved in a neighbor's marital problems.

Boris Karloff narrates an animated tale about the lonely and heartless title character who decides to dress up as Santa and steal the Christmas decorations, gifts and feast from the people of Whoville.

Feeling sad and unwanted, Santa takes the day off before Christmas; voices: Mickey Rooney, Shirley Booth; animated.

The yuletide season brings headaches for Santa Claus, who bails his ne'er-do-well brother Fred out of trouble and puts him to work in his factory.

Adopted as a baby by one of Santa's elves (Bob Newhart), a man (Will Ferrell) leaves the workshop to search for his family in New York.

A New York policeman (Bruce Willis) outwits foreign thugs holding his wife (Bonnie Bedelia) and others in a Los Angeles high-rise.

An unlucky assassin's latest mission puts him on a collision course with lethal adversaries from around the globe -- all with connected yet conflicting objectives -- on the world's fastest train.

The sequel's police hero (Bruce Willis) spots military terrorists while waiting for his wife (Bonnie Bedelia) at a Washington, D.C., airport.

An unlucky assassin's latest mission puts him on a collision course with lethal adversaries from around the globe -- all with connected yet conflicting objectives -- on the world's fastest train.

The bodyguard, Michael Bryce, continues his friendship with assassin, Darius Kincaid, as they try to save Darius' wife Sonia.

The team scouts for the next child star while trying not to laugh as Dan Jost reads his honest movie reviews in a focus group.

The Jokers are at Raising Cane's, and following that, asking for help to carry some furniture; one of them will be strapped to a speeding race car for his punishment.

The Jokers are breaking and entering a home for a commercial where they showcase their wackiest and over the top performances; to top it off, one loser will be trolling his way through the Liberty Science Center's Touch Tunnel!

Looks like the guys are selling sunsets (or struggling to), while later asking for help to film a bizarre video. However, one must lose. And that one, must help a horse lose something from down under.

Rachel crosses swords with her temporary replacement (Dermot Mulroney) at the shop; Phoebe wreaks havoc on the set of Joey's soap opera.

Monica invites Rachel's workplace rival (Dermot Mulroney) to her birthday party; Joey flirts with Emma's new nanny (Melissa George); Phoebe and Mike (Paul Rudd) take care of a litter of rats.

Monica exults in the applause she receives on karaoke night, unaware that the cheering audience can see through her blouse.

Joey and Phoebe conspire to send Rachel and Ross on disastrous blind dates.

Joey stumbles upon a way to impress a famous actor (Jeff Goldblum) during an audition; Ross learns the identity of a long-ago mugger; Chandler accepts an internship at a shoe company.

Both Monica and Chandler secretly approach Joey for a loan; Phoebe invites Mike (Paul Rudd) to move in with her; Rachel baby-proofs the apartment.

Ross and Chandler trade barbed insults on their alma mater's Web site; Phoebe's resolve not to call ex-boyfriend Mike (Paul Rudd) weakens.

The gang buys scads of lottery tickets for the multimillion-dollar jackpot; Rachel suspects baby Emma is on the verge of saying her first word.

When their plans for a holiday getaway fall apart, a couple (Vince Vaughn, Reese Witherspoon) must spend Christmas Day trudging to a quartet of family get-togethers.

A bumbling relative gets the chance to redeem himself when he's called upon to look after his brother's three children.

The Griswolds (Chevy Chase, Beverly D'Angelo) spend the holiday in a garish way, especially when a country cousin (Randy Quaid) pulls up in an RV.

Zombie scare actors, a blended family, and a pair of hopeful Chiropractors take on the Wipeout course.

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.

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.

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

Leonard and Penny offer Sheldon's old room to Raj after he moves out of his apartment.

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.

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.

The Griswolds (Chevy Chase, Beverly D'Angelo) spend the holiday in a garish way, especially when a country cousin (Randy Quaid) pulls up in an RV.

A bumbling relative gets the chance to redeem himself when he's called upon to look after his brother's three children.

When their plans for a holiday getaway fall apart, a couple (Vince Vaughn, Reese Witherspoon) must spend Christmas Day trudging to a quartet of family get-togethers.

Eddie learns a revealing lesson when Greta takes a part-time job.

Ventriloquist Steve's look-alike dummy comes to life on Halloween.

As a playground supervisor, Steve has a hard time controlling the bullies.

Sheldon attends his first comic book convention; Mary tries selling makeup.

Sheldon makes friends with his dorm neighbors; George Sr. learns his job is in jeopardy.

Sheldon butts heads with Dr. Lee, a new scientist in the lab; Mary is given a lotto ticket.

Sheldon joins Dr. Linkletter and Dr. Sturgis on a science road trip; Georgie continues to lie about his age.

Meemaw's gambling room becomes a success; Sheldon dips his toe in the stock market; Missy starts a business.

Sheldon gets an odd request from an old friend, Paige; George Sr. and Mary are caught in the middle of Meemaw and Dale's breakup; Georgie comes clean to Mandy.

Rachel's visit to a soap opera set inspires her to dream about Joey; Chandler takes Ross on a weekend getaway after Monica cannot take time off from work.

Ross invites an attractive paleontologist (Aisha Tyler) to a rooftop "Days of Our Lives" party being thrown by Joey.

Monica and Chandler run into an old acquaintance when they secretly go to a fertility clinic; Ross helps Joey woo the same professor (Aisha Tyler) he wants to date.

Monica and Chandler interview unsuspecting candidates, hoping to find the right man to father their baby.

The gang heads to Barbados for a paleontology convention where Ross is the keynote speaker; David (Hank Azaria) prepares to propose to Phoebe, but ex-boyfriend Mike (Paul Rudd) is not yet out of the picture.

The gang heads to Barbados for a paleontology convention where Ross is the keynote speaker; David (Hank Azaria) prepares to propose to Phoebe, but ex-boyfriend Mike (Paul Rudd) is not yet out of the picture.

In Barbados, Monica, Chandler and Phoebe eavesdrop on their friends' passionate encounters; Monica styles her hair to look like a blowfish; Phoebe and Mike rekindle their romance.

Ross drinks too much alcohol at dinner with Rachel, Joey and Charlie; Frank Jr. (Giovanni Ribisi) cannot cope with his precocious triplets.

Rachel and Joey nervously anticipate their first real date; Monica and Phoebe try to avoid an obnoxious friend (Jennifer Coolidge) with a fake British accent; Ross emerges from a tanning booth with a two-toned appearance.

Rachel gets Monica and Chandler to delay their trip to Vermont for Emma's first birthday bash.

Rachel feels like her younger sister, Amy, is finally on the verge of making a major change in her attitude; in order to help Amy become a more responsible person, Rachel overrides Ross' strong protests and allows Amy to baby-sit Emma.

When Ross interviews with Charlie's ex-boyfriend (Greg Kinnear) for a prized grant, the doctor makes a shocking stipulation; Chandler lies about watching Joey's bizarre audition tape.

Monica and Chandler fuss over their apartment as they expect a visit from the adoption worker, Laura; Phoebe and Mike opt for a small wedding and donate the extra money to a children's charity.

After celebrating the completion of the top-secret Air Force project, Leonard, Sheldon and Wolowitz get an unwelcome surprise; Amy receives an offer for a summer position as a visiting researcher.

The gang is concerned when Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.

Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.

Leonard's job is at stake after he gives an embarrassing radio interview; Amy and Bernadette bond over having to hide their success from Sheldon and Howard.

As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side; Koothrappali and Stuart compete to win the heart of Bernadette's new co-worker.

Wolowitz and Sheldon bond over having disappointing fathers; Leonard is disturbed when his mother finds a new best friend in Penny.

Sheldon and Koothrappali confide in Bernadette when they can't handle Amy and Wolowitz working together; Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.

Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley when Bernadette and Wolowitz need bed rest.

Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali on navigating his relationship with Ruchi.

Leonard and Wolowitz are furious when they learn Sheldon worked with the military behind their backs; Bernadette suspects Ruchi is trying to steal her job.

Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable investment; a seven-year-old video reveals a secret about Leonard and Penny's relationship.

Sheldon and Amy try to use math to eliminate wedding planning stress; Koothrappali "breaks up" with Wolowitz after realizing he is hurting his confidence.

Sheldon plans an authentic "Little House on the Prairie" dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.

Sheldon and Amy subject their friends to a series of secret experiments to discover which two would be most qualified to be the best man and the maid of honor at their wedding; Penny reveals her true feelings about Amy.

Sheldon kicks Amy out to work solo; Amy and Leonard bond during a series of science experiments; Bert replaces Wolowitz in the band; Sheldon finds Penny a surprising source of scientific inspiration.

Zombie scare actors, a blended family, and a pair of hopeful Chiropractors take on the Wipeout course.

Roger becomes a marionette and injures other students to help Steve win the school talent show; Stan, Hayley and Klaus start their own local honey business.

Francine becomes a conspiracy theorist when she finds out Stan has been shielding her from unhappy news; Klaus and Steve help Snot pimp out his basement.

Stan and Hayley compete in collecting data for the US Census; Klaus has Steve and his friends model for his new camera.

Steve tries to stop Roger after he joins a mysterious order of birds' egg thieves; Francine buys a new Italian sauce for the family.

Stan discovers that the Langley Falls historical mural has been ruined by graffiti and neglect and convinces the town to allow him to restore the mural himself; Roger becomes Steve's instructor at a prestigious clowning university.

Hayley gets a job as a delivery driver and begins delivering lunch to Stan's office; when she sees the terrible work conditions, she organizes a strike; the family watches "Breaking Bad" in reverse and discovers the show conceals a scavenger hunt.

Stan deals with childhood issues of abandonment, which affects his performance at work; Klaus builds a website based on Smith family fails.

Francine hosts a dinner party despite a serial killer on the loose who attacks dinner parties and terrorizes the town; when the lights go out and guests start to disappear, Roger takes charge of solving the mystery of who could be stalking the party.

The music group New Edition helps Stefan woo Laura when their long-distance relationship begins to suffer.

Myrtle Urkel pushes Eddie to marry her and has Big Daddy help her apply the pressure.

Carl hopes to get a promotion by hosting a fancy dinner party for his superiors.

Carl and Steve serve on the same jury, where Steve's investigative talent comes into play.

Sheldon copes with the death of a hero; Missy wants to babysit; Georgie struggles with his big secret.

Sheldon and Missy learn about Georgie's pregnancy, and the whole family promises to keep it a secret.

As the church congregation gossips about Georgie, Missy stands up for her brother; Sheldon is distracted by the family drama.

Sheldon struggles to cope with his first signs of puberty; Mary and George Sr. both hunt for new jobs; Georgie and Meemaw take a business trip across the border.

George Sr. bails Meemaw and Georgie out of jail; Sheldon and Missy meet Mandy; Mary feels unwelcome at church.

Sheldon and Missy try to help the family's finances; Mary struggles to find her footing without the church.

Monica prepares a Thanksgiving feast for the gang, then becomes enraged when everyone shows up late; Phoebe convinces Rachel to enter Emma in a baby beauty contest.

A prospective birth mother (Anna Faris) labors under a misconception about Monica and Chandler's respective occupations.

Rachel and Phoebe spot Chandler getting into a car with a mystery blonde; the friends reminisce about memorable moments.

Joey appears as a celebrity contestant on "$100,000 Pyramid"; Monica and Rachel hire an ungainly stripper for Phoebe's bachelorette party.

A blizzard causes Phoebe and Mike's wedding to spiral out of control; uptight Monica steps in as her friend's wedding planner, then drives everyone crazy.

Monica and Chandler show Erica the tourist sights; they learn their baby's biological father might be an unsavory character; Joey begs Phoebe to teach him how to speak French before an audition.

Rachel goes to a job interview at a restaurant and winds up sitting next to her current boss; Joey feels abandoned because Monica and Chandler are leaving.

Ross tries to win back Rachel's job with her former fashion employer; Phoebe tries to keep Joey from learning about his agent's death; Monica and Chandler make a horrifying discovery.

One of the guys becomes offended when Rachel does not give him the same goodbye she gives the others.

The six friends prepare to say goodbye and embark on the next chapters of their lives; momentous events and last-minute surprises.

The six friends prepare to say goodbye and embark on the next chapters of their lives; momentous events and last-minute surprises.

Monica's high-school friend visits after leaving her fiance at the altar.

Monica begins to feel the heat when she prepares dinner for her parents (Elliott Gould, Christina Pickles).

Koothrappali learns the woman he's dating has a very upset husband; Sheldon rents his old room for a quiet place to work.

Sheldon petitions Wil Wheaton to appear on the new "Professor Proton" show, but Wil offers a role to Amy instead; Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her.

When Bernadette won't go into labor, her friends try different tactics to get things started; Wolowitz confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.

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.

A brilliant but reclusive scientist, Doctor Wolcott, invites Sheldon to his cabin in the middle of nowhere; Penny and Bernadette improvise after Amy doesn't like the tame bachelorette party they planned for her.

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.

Fun Moms, college volleyball players and God's gift to Wipeout take on the Wipeout course for the chance to win $25,000 and maybe, just maybe, kiss John Cena on the lips.

Zombie scare actors, a blended family, and a pair of hopeful Chiropractors take on the Wipeout course.

Luke and Manny's hot-tempered basketball coach quits during a game, causing Jay and Phil to jockey to fill the position; Mitchell takes Cameron along to meet a prospective employer.

Claire is suspicious when Phil's father shows up for an expected visit; Manny is traumatized by a horror movie.

Gloria invites the whole family on a getaway to Hawaii for Jay's birthday.

An unexpected reality check dampens Jay's plans for relaxation; Phil wants to make the trip romantic for Claire; the kids get into mischief when left to their own devices.

Everything seems to be working against Claire's plans for a new family portrait; Cameron gets a gig as a wedding singer, leaving Mitchell home alone with Lily and a wayward pigeon.

Phil finally agrees to sell the old station wagon but only after a family trip down memory lane; Cameron asks Jay for help when Mitchell decides to build a life-size princess castle for Lily.

Gloria decides to honor her late grandmother by cooking more traditional Colombian meals; Claire finds out Alex is interested in a boy; Mitchell's aversion to public displays of affection causes an argument.

When an earthquake hits, Claire gets stuck in the bathroom with the plumber; Manny experiences an existential crisis while out with Jay; Mitchell and Cameron use the quake as an excuse to get out of a party thrown by a friend (Nathan Lane).

Claire and Mitchell try to spare their significant others from embarrassment; Haley tries to teach Alex how to be cool.

Phil and Claire announce a family challenge after noticing how busy everyone is with electronic devices; Cameron and Mitchell try to get Lily into a good preschool.

Claire prepares to make the Dunphy house spooky for Halloween; Cameron does not like the holiday because of a traumatic childhood experience; Jay and Manny tease Gloria about her accent.

Claire and Haley are stuck at home sick; the taunting of a chirping smoke detector has Phil preoccupied; Gloria and Manny's surprise visit at Jay's work leads to headaches for him; Cameron takes Lily for a commercial.

Manny experiences a minicrisis over getting older; Phil and Claire engage in a car race on the way to a restaurant; Mitch and Cam go to the mall to pick up a gift for Manny's birthday.

Cameron's mother (Celia Weston) makes Mitchell uncomfortable; Haley breaks up with Dylan.

Luke and Manny have their first school dance; Jay and Phil take Luke and Manny on a mall run that becomes quite stressful; Mitch and Cam learn that Lily is biting other kids on the playground.

Claire intends to stop a car that speeds through the neighborhood; Phil deals with a difficult client; Jay teaches Manny to ride a bike; Mitchell and Cameron meet a charming neighbor.

Sheldon must choose sides in an ethical dilemma; Mary tries her hand at writing; Mandy needs a new place to live.

Sheldon makes a terrifying mathematical discovery while tutoring Billy; Mary is jealous of Missy's relationship with Mandy and MeeMaw.

At college, Sheldon decides to expand his responsibilities and become a dorm resident adviser; Meemaw and Dale make a sketchy business deal; Mary and George Sr. rekindle their romance.

George Sr. is asked to help with the football team; Mandy discovers Georgie and Meemaw's secret business.

Sheldon's search for a comic book leads him to a breakthrough; Georgie and Mandy have an uncomfortable first encounter with her parents.

Sheldon's database invention puts him at odds with the university; the church takes issue with Meemaw's video store.

Monica finds it difficult to break up with her latest boyfriend (Geoffrey Lower), whom everyone likes; Chandler starts smoking again; Phoebe receives a large sum of money.

While the men attend a hockey game and end up at a hospital, the women spy on President Clinton's top aide, George Stephanopoulos, who lives across the street.

Chandler and Phoebe plan to dump dates on the same night at the same coffee house.

An agent (June Gable) offers Joey a movie role as Al Pacino's naked body double; Chandler dates a liberal woman (Sofia Milos).

Chandler finds himself trapped in an ATM vestibule with model Jill Goodacre during a city-wide power failure.

Monica and Ross share their feelings about death and their grandmother.

Monica and Ross cook Thanksgiving dinner for themselves, but everyone else shows up.

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.

It's Valentine's Day and, out on his first date in nine years, Ross meets up with his ex-wife; 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.

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.

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 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 fiancee out to dinner to get to know her.

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.

All Elite Wrestling continues to inject new spirit, freshness and energy into mainstream wrestling featuring a world-class roster of diverse male and female wrestlers.

All Elite Wrestling continues to inject new spirit, freshness and energy into mainstream wrestling featuring a world-class roster of diverse male and female wrestlers.

Exciting new matches, more stories and more action, featuring the world-class All Elite Wrestling roster.

Exciting new matches, more stories and more action, featuring the world-class All Elite Wrestling roster.

Exciting new matches, more stories and more action, featuring the world-class All Elite Wrestling roster.

Exciting new matches, more stories and more action, featuring the world-class All Elite Wrestling roster.

One-star reviews are what Sal, Q and Murr will be combating, and then testing their acting chops with special celebrity guest, Richard Kind!

It's mayhem as the guys work as mall janitors with an out-of-control trash can and then devise a plan of revenge on our producer Dan Cast; in the end, two Jokers lose this episode race and will be getting the refill of a lifetime.

Alex's dedication to learning makes Claire and Phil question themselves; Gloria tries to make new friends; Mitch runs into an ex-girlfriend while out with Cam.

Claire and Phil find themselves in a compromising position when the kids try to surprise them with breakfast in bed; an e-mail mars Jay and Gloria's Vegas vacation; Mitch and Cam try to get a hookup at a hot new restaurant.

Claire and Phil decide to reprise their role-playing adventure from the previous year; Jay's elaborate Valentine's surprise for Gloria keeps getting held up; an admirer comes between Cameron and Mitchell.

Fizbo is disinvited from Lily's birthday party; Mitchell and Claire's mother DeDe (Shelley Long) comes to the party with Claire's ex-boyfriend (Matt Dillon).

Gloria and Jay try to help when Phil and Claire get into a huge argument; Cameron asks Mitchell and Luke to help prepare for a big fundraising event.

Claire wears herself out trying to make peace between Alex and Haley; Phil sneaks off for a day at the spa; Cameron decides to write a book.

Claire and Phil worry when they learn Luke has befriended their cantankerous old neighbor; Jay tries to avoid attending a symphony concert with Gloria and Manny; Haley baby-sits Lily.

Cameron is overzealous in his planning of the spring musical performance at Luke and Manny's school; Jay's brother visits; Phil convinces the family to be in his new ad.

Mitchell and Cameron try to choose who would best take care of Lily should anything happen to them.

Gloria and Claire plan a Mother's Day hike with the kids; things becomes awkward when Phil catches Jay in a moment of weakness.

Phil and Claire shock the kids by switching parenting roles for a day; Jay gives advice to an entrepreneur about his dog-training business; Cameron has the flu, leaving Mitchell to decide what to do with their Lady Gaga tickets.

As the family prepares for Alex's middle-school graduation, Jay tries to hide a cosmetic-procedure mishap, Cameron is upset about Mitchell laughing at his expense, and Phil antagonizes Claire.

The family scrambles to plan a big celebration for Jay's birthday; Phil runs into his college nemesis; Cameron gets into hot water at a bakery.

Sheldon considers dropping out of college to focus on building his database; George Sr. is frustrated when someone else gets credit for his football wins.

Mary struggles to make new friends; Mandy pushes Georgie to date another woman.

Sheldon learns the university is building a database without him; Mary takes care of a bedridden Mandy and Meemaw.

Mary butts heads with Mandy's mother, Audrey; Sheldon attempts male bonding.

Paige drags Sheldon to a college party; Missy gets caught in a lie.

The Coopers can't be found as Mandy goes into labor; Sheldon is excited about the launch of his database.

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.

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.

When Carol gives birth, Ross and Susan almost miss the event; Joey befriends an unmarried pregnant woman.

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.

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.

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.

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.

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.

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.

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.

Fun Moms, college volleyball players and God's gift to Wipeout take on the Wipeout course for the chance to win $25,000 and maybe, just maybe, kiss John Cena on the lips.

Zombie scare actors, a blended family, and a pair of hopeful Chiropractors take on the Wipeout course.

Though broke and lovelorn, a woman (Kristen Wiig) takes on the strange and expensive rituals associated with being her best friend's maid of honor.

The family takes a vacation on a ranch in Jackson Hole, Wyo.; Jay faces off with a cowboy.

Mitch and Cam bring the family together to announce their plan to adopt another child.

Jay's relationship with the dog irritates Gloria; Phil and Luke try to master the tightrope; Cameron starts a juice fast.

Jay helps Manny with a school fundraiser; Claire petitions for a stop sign at a busy intersection; Phil and Luke try to create a viral video; Gloria searches for Stella.

Gloria tries to help Jay and Manny with their problems, but both are unreceptive; Claire considers running against Councilman Duane Bailey (David Cross); Cam and Mitch are the victims of a hit-and-run accident.

Phil takes Haley to visit his alma mater; Claire goes out with Mitchell and Cameron; Gloria and Jay may have to broach a delicate subject with Manny.

Gloria insists on a night of salsa dancing with Jay; Cameron goes too far when Mitchell and a friend challenge him to get a hot woman's (Leslie Mann) number; Phil builds a tree house.

Sheldon confronts the failure of his database; Georgie and Mandy struggle as new parents; Missy feels forgotten.

Missy steals her dad George's truck and runs away from her house; she hits the road with her friend Paige.

Georgie goes on a birthday date; Mary confronts Brenda about her relationship with George; Sheldon takes an interest in Missy's favorite TV show.

Sheldon wants to search for life on other planets; Mandy answers Georgie's marriage proposal; Missy is caught between two friends.

Mandy gets an exciting job opportunity; Sheldon worries that he's falling behind; Georgie takes his daughter to work.

The gambling room gets broken into; Sheldon wants to study abroad; Missy makes a new friend.

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.

Monica and Ross cook Thanksgiving dinner for themselves, but everyone else shows up.

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

Emotions become the feast of the day when the gang plays a game of touch football on Thanksgiving; the turkey is left stewing when the losing team calls for a rematch.

To atone for kissing Joey's girlfriend, Chandler agrees to stay inside a shipping crate during the Thanksgiving holiday.

As the gang digests Monica's huge Thanksgiving meal, everyone reminisces about their worst Thanksgiving ever.

Ross becomes upset when someone at work takes his sandwich from the refrigerator and eats it; Joey finds himself in a mess when he tries to cover for Chandler and Monica's dating.

Chandler finds out Monica never told her parents he was living with her; Rachel tries her hand at making dessert.

Joey may have ruined Rachel's chances with Tag (Eddie Cahill) when he opens his mouth during Thanksgiving dinner.

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

Rachel has a bone to pick with her self-centered sister (Christina Applegate) on Thanksgiving; Monica protects her good wedding china; Joey forgets to join his TV cast mates for the Thanksgiving parade.

Monica prepares a Thanksgiving feast for the gang, then becomes enraged when everyone shows up late; Phoebe convinces Rachel to enter Emma in a baby beauty contest.

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.

The Griswolds (Chevy Chase, Beverly D'Angelo) spend the holiday in a garish way, especially when a country cousin (Randy Quaid) pulls up in an RV.

Adopted as a baby by one of Santa's elves (Bob Newhart), a man (Will Ferrell) leaves the workshop to search for his family in New York.

A poor boy (Freddie Highmore) and four spoiled children win a tour through the incredible factory of an odd confectioner (Johnny Depp).

Two terminally ill men leave their hospital ward and set out to complete a list of things they want to do before they die.

From being overprotective parents to disclosing perplexing side effects, one Joker can't handle the challenges and will learn that all that glitters is not gold.

Q, Murr and Sal throw and catch grocery items in the Joker vs. Joker challenge with special celebrity guest, Jax.

Murr, Q and Sal sit alongside a stranger to participate in a documentary-style interview; they try to upcharge guests again as hotel concierge.

The Jokers bring their plastic newborns to the grocery store; they pitch new community programs that the local community will find quite strange.

The Jokers steal America's babies at the mall; while they lie in wait trying to succeed in an impossible task, Sal, Q and Murr hash on some never before seen clips.

Sal and Murr air out their dirty laundry by sorting out the whites and colors of their relationship through past clips from the "Couples Therapy Special" with Casey Jost, unlicensed therapist.

Murr and Q are going on a trip down memory lane and watching extended never-been-seen-before clips from the last few years.

Fun Moms, college volleyball players and God's gift to Wipeout take on the Wipeout course for the chance to win $25,000 and maybe, just maybe, kiss John Cena on the lips.

Zombie scare actors, a blended family, and a pair of hopeful Chiropractors take on the Wipeout course.

After a fire destroys a neighbor's home, the whole family tries to help by organizing a community drive.

A former neighborhood resident, now rich and successful, returns for a visit; Jay thinks Manny needs constructive criticism; Mitchell questions the authenticity of Cameron's colorful childhood stories.

The family puts together a quick Christmas celebration when they realize they won't be together on the actual day.

When Phil misses a call from his doctor with test results, he immediately assumes the worst; Javier stops by to take Manny to the horse races; Mitchell's winning of an environmental law award sparks a competition.

Claire and Jay's competitive streaks lead them to take over their kids' school projects; Phil asks Haley and Gloria to help him with a presentation; Mitch and Cam meet with prospective birth mothers.

Two terminally ill men leave their hospital ward and set out to complete a list of things they want to do before they die.

When their plans for a holiday getaway fall apart, a couple (Vince Vaughn, Reese Witherspoon) must spend Christmas Day trudging to a quartet of family get-togethers.

The Griswolds (Chevy Chase, Beverly D'Angelo) spend the holiday in a garish way, especially when a country cousin (Randy Quaid) pulls up in an RV.

Adopted as a baby by one of Santa's elves (Bob Newhart), a man (Will Ferrell) leaves the workshop to search for his family in New York.

After a bad day at work, a frustrated reporter meets God, who endows him with divine powers for one week.

A newly elected congressman (Steve Carell) faces a crisis of biblical proportions when God (Morgan Freeman) commands him to build an ark.

When their plans for a holiday getaway fall apart, a couple (Vince Vaughn, Reese Witherspoon) must spend Christmas Day trudging to a quartet of family get-togethers.

Feeling sad and unwanted, Santa takes the day off before Christmas; voices: Mickey Rooney, Shirley Booth; animated.

After a bad day at work, a frustrated reporter meets God, who endows him with divine powers for one week.

Sal, Q and Murr kick off another season of antics by getting themselves stuck in a vent system and confusing customers at a bagel shop; our losing Joker will face humiliation in a punishment that's tough to swallow.