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

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

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

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

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

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

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

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

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

Andy decides to quit his job and pursue his dream; Dwight has his best day ever at work; Jim comes back to Scranton to spend more time with Pam.

Andy decides to quit his job and pursue his dream; Dwight has his best day ever at work; Jim comes back to Scranton to spend more time with Pam.

As everyone prepares for the premiere of the documentary, Jim convinces Dwight that he needs to hire an assistant to the assistant to the regional manager; after being turned away at daycare, Angela brings her baby to work.

As everyone prepares for the premiere of the documentary, Jim convinces Dwight that he needs to hire an assistant to the assistant to the regional manager; after being turned away at daycare, Angela brings her baby to work.

Worlds collide when the Flash travels back in time to change the events of the past. However, when his attempt to save his family alters the future, he becomes trapped in a reality in which General Zod has returned, threatening annihilation.

Steve finds popularity among the technologically inclined at BIT; Laura makes a break and moves in with Myra.

The Winslows realize their feelings for 3J when he runs away from the group home.

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

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

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.

Monica and Chandler encounter Richard (Tom Selleck), Monica's former boyfriend, in a romantic restaurant.

Monica feels that Rachel is trying to steal the spotlight from her engagement; Chandler worries about his performance in the bedroom.

Monica learns what her parents have done with her wedding fund; Joey teases Rachel about her late-night reading material.

Chandler's efforts to bond with Monica's father (Elliott Gould) backfire during a racquetball game; Rachel tries to teach Joey how to sail; Monica tries to replicate Phoebe's grandmother's cookie recipe.

Rachel considers hiring an inexperienced but handsome man over a better qualified woman as her executive assistant.

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

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

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

Tag joins for Thanksgiving dinner; Joey may have ruined Rachel's chances with Tag when he opens his mouth during dinner; Phoebe reveals that she has been secretly keeping a dog in her room for a few days while its owner is away.

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

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

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

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

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

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

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

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

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

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

Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.

Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.

Leonard asks Penny for advice when his new relationship starts moving too fast.

Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.

When Penny's comment about Wolowitz's love life sends him into a depressed stupor, his friends lose their most important teammate in an upcoming fighting-robot competition.

Sheldon develops a scientific procedure for making friends; Kripke controls a new supercomputer.

Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.

When Michael begins monitoring their e-mails, he manages to upset all the employees.

After Michael suggests a game of "Yankee Swap" with the Secret Santa gifts, everyone fights over Michael's gift to Ryan, bringing morale to an all-time low.

When Michael takes the Mifflin crew on a motivational harbor cruise, things get out of hand and Michael ends up in the brig.

After he has an accident while using a grill, injured Michael demands attention from the entire Dunder Mifflin office.

Because Jim fears Michael will tell the others he likes Pam, he pretends to be Michael's best friend.

When someone stains the carpet in Michael's office, he begins to question his popularity among his staff.

When Jan conducts a seminar for the female employees, Michael takes the guys to the warehouse for some male bonding.

Michael visits corporate headquarters in New York on Valentine's Day.

When Dwight, who has a fear of public speaking, is asked to give a speech at a sales convention, he turns to Michael for help.

Michael strikes up a friendship with the 5-year-old daughter of his enemy when children visit the office.

Michael takes the Dunder Mifflin employees ice skating to celebrate his birthday; Kevin waits nervously for test results.

Dwight finds half a joint in the parking lot and launches a full investigation; Michael asks an unusual favor.

Chaos ensues when Michael takes responsibility for conflict resolution from the Human Relations department.

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

Sal, Q and Murr are crashing and burning into product displays and hiding in tight spaces, but one of them must face the music with celebrity guest Bret Michaels.

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

The jokers give unsolicited etiquette advice and live tape strange product reviews; one lucky joker takes all the blame for celebrity guest Post Malone.

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

From working remotely to pitching unconventional business ideas with Steve Byrne, one Joker has a shot at winning a pair of highly sought-after sneakers thanks to NBA star Anthony Davis.

Mandy surprises Georgie with a spa weekend; Sheldon prepares for his summer in Germany.

Sheldon and Mary head to Germany while the rest of the Cooper family braves a tornado that is heading straight for Medford.

News of the tornado reaches Sheldon and Mary in Germany; with the Cooper house in chaos, Missy steps up.

Sheldon realizes he is the weakest student in his class; Meemaw looks to expand her gambling business.

Sheldon explores Germany behind Mary's back; Missy attempts to pull a fast one on George Sr.; Meemaw and Dale adjust to living together.

Missy steps up; Mary has a surprise for George; Sheldon finds his dorm occupied.

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

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

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

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

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

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

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

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

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

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

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

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

Leonard and Penny are drawn together after a disastrous visit from Leonard's mother (Christine Baranski).

A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.

Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is aboard the train they are taking to San Francisco.

Penny's home business turns into a complete nightmare when Sheldon takes over.

Penny develops a rivalry with a sexy new female neighbor who threatens her position as queen bee of the building.

Wolowitz and Leonard decide to check out a local bar on Ladies' Night.

Koothrappali and Leonard take Wolowitz to Las Vegas; Sheldon is forced to bunk with Penny when he gets locked out of his apartment.

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.

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

Employees take some big gambles when they host a charity casino-night in their warehouse.

Michael unintentionally outs a gay employee; the situation with Jim and Pam.

Michael organizes a party in his hotel room when he, Dwight and Jan attend the Northeastern Mid-Market Office Supply Convention in Philadelphia.

After Jan busts Michael for having a "movie Monday," Angela pushes Dwight to make a play for Michael's job.

Michael tries to help the staff grieve after learning that the former regional manager has died.

Dwight takes Ryan on his first sales call, subjecting him to an outrageous series of tests along the way.

Michael urges the staff to support Kelly and attend a local celebration of the Hindu Festival of Lights.

Michael strives to keep the staff's spirit up after learning of the Scranton branch shutting down; people envision how their lives will change.

Old friends Jim and Pam are back together after months apart as the Scranton branch and Stamford branch are finally merged.

Michael tries to be supportive after learning that a new employee is an ex-convict; the staff compares the office to a prison.

Strife on the party-planning committee results in two competing Christmas parties; Michael gets dumped for the holidays.

Strife on the party-planning committee results in two competing Christmas parties; Michael gets dumped for the holidays.

Michael returns from his Jamaican vacation; an e-mail of a racy vacation photo makes the rounds of the office.

Claire senses Phil may be more into "Juliana" than her; Gloria's sister visits; Mitchell and Cameron get into a situation with Anders.

Claire takes a first class seat on a flight, leaving Phil in coach; Gloria makes Jay teach Manny how to defend himself; Mitch, Cam and their friends throw Sal a belated baby shower.

While stuck at the airport, Claire partakes in online snooping that creates drama with the rest of the family.

Sheldon helps his roommate try to beat the stock market; Missy and Billy Sparks throw a party; Mary finds a new church.

Georgie and Mandy's wedding plans pit Mary against Mandy's mom, with baby CeeCee caught in the middle.

Georgie and Mandy get married.

Sheldon studies to be Meemaw's lawyer when she is put on house arrest; the Coopers have a plumbing emergency.

Sheldon's published paper leads to a frenzy of grad school recruiting; Georgie tries to speak more properly in front of his daughter.

Meemaw gets assigned a tough probation officer; Georgie takes marriage advice from his father-in-law.

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

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

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

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

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

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

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

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

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

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

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

Ross' new girlfriend wants to put their photograph on Christmas cards; Rachel eyes Joey as a possible partner.

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.

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 not to 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.

Leonard is horrified when his mother (Christine Baranski) visits.

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.

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.

Andy suggests that Michael team up the staff for sales calls; Dwight tries to cover for Angela when she misses a deadline.

Oscar returns from his long vacation; Andy takes advantage of events to get closer to Michael; Jim gets Karen and Pam to help stage a prank on a new target.

Michael brings two adult performers into the office in honor of Phyllis' wedding shower; Karen confronts Pam about her past with Jim.

Phyllis regrets giving Michael an important job at her wedding; Dwight plans to catch wedding crashers.

Ryan invites Michael to be a guest speaker at his business school; Dwight battles a bat that is loose in the office; Pam invites co-workers to her first art show.

Michael and Jan make their relationship public during a party; Jim meets Karen's ex; the staff goes to happy hour for drinks.

Darryl meets with Michael to negotiate a pay increase; Jim deals with the consequences of Pam's confession to Roy.

Andy returns from anger-management classes, planning to make a fresh start with his co-workers; Michael and Dwight try to illustrate the dangers of the workplace.

The staff goes into crisis mode after a shipment of paper goes out with an obscene watermark; Michael holds an impromptu press conference; Jim and Andy handle harried clients who used the paper.

Outrage breaks out in the office when Phyllis gets an eyeful from a flasher; Dwight and Andy work on catching the perpetrator.

Michael must recommend his own replacement when the company considers him for a corporate position; Pam must watch Jim and Karen have fun together at a company outing.

Michael, Jim and Karen go to New York to interview for a job opening; in Scranton, the new regime institutes sweeping reforms; Jan brings exciting news.

Michael, Jim and Karen go to New York to be interviewed for a job opening; in Scranton, the new regime institutes sweeping reforms; Jan comes in with exciting news.

A freak accident causes Michael to think the office is cursed; Michael decides to hold a charity 5K fun run; further developments in co-workers' romances.

A freak accident causes Michael to think the office is cursed; Michael decides to hold a charity 5K fun run; further developments in co-workers' romances.

Joined by John Mayer, the Jokers must convince unsuspecting temps to accompany them to a business dinner; the losing Joker has to face the wrath of angry Mayer fans in a humiliating punishment.

Sal, Q, and Murr fall head over heels for someone they just met; a heated debate with pro wrestler MJF; a Joker discovers an untapped clairvoyant talent they possess with guest star Kesha.

A special episode hosted by Casey Jost and former NFL player Eddie Jackson as they spend time reviewing nail-biting clips of never-before-seen moments from Season 10.

George Sr. is worried that Mary wants another baby and gets a vasectomy behind her back; Dr. Linkletter and Dr. Sturgis go to Sheldon for science tutoring.

George Sr. gets an exciting job offer; Sheldon prepares for his move to California.

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

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

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

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

Rachel and Joey might become more than friends; Chandler sets a Ms. Pac-Man record; Ross breaks land-speed records.

Joey might declare his love for Rachel, or Phoebe; Rachel breaks a pact with Ross; Chandler becomes mister bubble bath.

Joey realizes his intense feelings for Rachel are excluding Ross from the joys of impending fatherhood.

Monica prepares a memorable St. Valentine's Day for Chandler with sexy lingerie and X-rated entertainment.

Joey confesses his true feelings for Rachel; Phoebe introduces Monica to her new boyfriend (Harry Van Gorkum).

Rachel devises a lie about her unborn child that she hopes will break the silence between her and Joey; Phoebe reads tea leaves and predicts she will soon encounter the man of her dreams.

Phoebe brings her annoyingly upbeat boyfriend to the 35th anniversary of Monica and Ross' parents, who urge Ross and pregnant Rachel to pretend to be married.

When Soap Opera Digest requests an interview, Joey enlists his friends to make sure he does not say anything that could cost him his role.

During her baby shower, Rachel realizes she is unprepared to be a mother and accepts her mother's (Marlo Thomas) offer to move in to help with the child.

A food critic blasts Monica's cooking in a newspaper review; a cute saleswoman riles Rachel when she flirts with Ross; Phoebe coaches Chandler for a job interview.

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.

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

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.

The Jokers are back as wacky inventors pitching a whole new line of AI-themed gadgets; they fill out bogus incident reports with unsuspecting deli customers; the loser will be forced to demonstrate mentally absurd and physically grueling apps.

The Jokers pretend to be bellhops and need to do and say what they're told while assisting unsuspecting guests to their rooms. Then, the guys need to give away tickets to an absurd made-up show they can no longer see.

Anthony Davis pranks former NFL tight end Marcedes Lewis when a routine valet drop-off turns into joyrides and errands; NBA coach Jason Kidd sends NBA player Cooper Flagg into a rookie symposium that devolves into awkwardness.

LeBron James and agent Rich Paul team up with Anthony Davis to prank NBA star Draymond Green with an ultra-exclusive investment opportunity, while Olympic gymnast Jordan Chiles traps WNBA star Rickea Jackson in a parking-lot nightmare.

Michael tries to combat his growing debt by asking employees for loans; Jim and Pam spend a night at Dwight's family farm.

Michael tries to combat his growing debt by asking employees for loans; Jim and Pam spend a night at Dwight's family farm.

Michael seizes the opportunity to exhibit his creativity when the Scranton branch must participate in a company ad; Dwight explores an online world.

Michael fights back when Karen tries to woo Stanley away from Scranton; a Finer Things Club further disturbs Dunder Mifflin's calm.

When Ryan excludes him from a wilderness retreat, Michael goes into the woods for his own survival adventure; Jim tries to revolutionize the office birthday party.

Jan sues Dunder Mifflin, and Michael is deposed as a witness; Kelly trash-talks Pam after Darryl beats Jim at ping-pong.

Pam and Jim run out of excuses and must go to Jan and Michael's house for dinner; when Dwight learns that Angela and Andy are also invited, jealousy gets the best of him.

A model in an office-supply catalog makes Michael feel things; to win back Dunder-Mifflin's parking spaces, Kevin and Andy oppose bosses of five businesses.

The Smiths try to plan a family game night, but Roger is full of excuses about prior commitments and gets caught in a lie.

Stan is legally separated from his favorite foods when Langley Falls implements a new ban on trans fats.

Claire won't let Phil buy a video game console; Jay and Gloria get into a disagreement over the types of toys Joe plays with; Haley wants to stand up for herself at work; Claire attempts to bribe the school principal.

When Alex learns she must share the Valedictorian title with a competitor, the principal lets them break a tie with a one-mile run; Gloria studies for her citizenship test; Mitch and Cam join a protest against a local restaurant.

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

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

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

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

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

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

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).

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

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

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.

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

Two detectives (Jackie Chan, Chris Tucker) battle a Hong Kong gangster (John Lone) and his henchmen after a bombing at the U.S. Embassy.

The assassination of Ambassador Han leads to the reunion of Lee and Carter. In Paris, the pair must stay one step ahead of Chinese gangsters and Lee's childhood friend, as they track down an envelope containing the identity of a powerful crime lord.

A Hong Kong detective and a wisecracking L.A.P.D. detective choose to work together to find the missing daughter of a Chinese diplomat.

Two detectives (Jackie Chan, Chris Tucker) battle a Hong Kong gangster (John Lone) and his henchmen after a bombing at the U.S. Embassy.

The assassination of Ambassador Han leads to the reunion of Lee and Carter. In Paris, the pair must stay one step ahead of Chinese gangsters and Lee's childhood friend, as they track down an envelope containing the identity of a powerful crime lord.

NBA star Bam Adebayo pulls WNBA MVP A'ja Wilson into an uncomfortable autograph scandal; Anthony Davis drops NFL star safety Quentin Lake and NFL analyst Jay Glazer into chaos during a competition show gone wrong.

Anthony Davis lures former NFL defensive lineman Gerald McCoy into a movie audition where he damages superhero memorabilia.

The Jokers hatch horrible revenge schemes on their office bullies, then put one poor contractor through the wringer as they attempt home improvement projects; tonight's loser will be gifted the world's finest douchemobile.

The Jokers are unsympathetic store managers, forced to throw out a disruptive customer before dealing with the wrath and disdain of fellow patrons.

Haley and Andy deal with their emotions in different ways; finding a preschool for Joe is more difficult than Jay and Gloria anticipated; when money gets tight, Cam wants Mitch to return to his former job.

Phil and Claire are hurt when Alex lies about her college move-in date and Luke doesn't want to spend the day at Phil's open house; being landlords stresses out Mitch and Cam.

Phil has second thoughts after he helps Haley talk Claire into letting Dylan move in; Mitch accepts a job working for Jay's biggest rival; Cameron and Gloria cannot agree on how to handle Manny's girl problem.

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; the ovulating Monica wants to get intimate with Chandler.

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 Website; 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.

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.

A lethal CIA agent (Dwayne Johnson) and his former classmate (Kevin Hart) encounter shootouts, espionage and double-crosses while trying to save the U.S. spy satellite system.

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

A lethal CIA agent (Dwayne Johnson) and his former classmate (Kevin Hart) encounter shootouts, espionage and double-crosses while trying to save the U.S. spy satellite system.

When the San Andreas Fault triggers a magnitude 9 earthquake, a search-and-rescue helicopter pilot (Dwayne Johnson) must navigate the destruction from Los Angeles to San Francisco to bring his estranged wife (Carla Gugino) and daughter to safety.

A security expert must infiltrate a burning skyscraper, 225 stories above ground, when his family is trapped inside by criminals.

When the San Andreas Fault triggers a magnitude 9 earthquake, a search-and-rescue helicopter pilot (Dwayne Johnson) must navigate the destruction from Los Angeles to San Francisco to bring his estranged wife (Carla Gugino) and daughter to safety.

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!

The jokers are asking strangers to send an important text to their loved ones and hunting for their missing kid using crazy descriptions.

The Jokers are back working as dry cleaners and TV producers, but one of them can't keep it together and must endure concertgoers who have escaped their enclosures.

The Jokers pretend to be bellhops and need to do and say what they're told while assisting unsuspecting guests to their rooms. Then, the guys need to give away tickets to an absurd made-up show they can no longer see.

The Jokers are back at Colonial Diner, offering some new bizarre specials to unsuspecting patrons; they take a ride through the park; after a nasty fall, the Joker must get park goers to help them out from underneath their bike.

Claire wants to give Haley and Alex a great experience on Take your Daughter to Work Day, but employees make things difficult; Jay has to help out at Joe's preschool when Gloria has jury duty; Mitch and Cam cannot agree on who to invite to a party.

Luke is arrested for driving without a license; Alex is caught sneaking out of a liquor store; Cam thinks Gloria should re-create and sell her family's hot sauce; Haley and Dylan have an awkward encounter with Beth and Andy.

A conversation about a house Phil is helping to sell gives everyone the idea to sneak in to enjoy it themselves; Jay and Gloria's plan to pay for a surprise family trip to Miami turns into a surprise for Gloria and then a bigger surprise for Jay.

Jim hits the golf course with Andy and Kevin in hope of landing a huge client; Michael sets up a booth at a job fair at Pam's alma mater to hire a summer intern.

Michael demands Toby's goodbye party at Dunder Mifflin be a huge celebration; Dwight and Meredith haze Holly (Amy Ryan), the new human resources person.

Michael demands Toby's goodbye party at Dunder Mifflin be a huge celebration; Dwight and Meredith haze Holly (Amy Ryan), the new human resources person.

Staffers in the Scranton branch of Dunder Mifflin become obsessed with their weight in the wake of corporate weight-loss initiatives; Michael pursues a friendship with Holly; Jim misses Pam, who is away at art school.

Staffers in the Scranton branch of Dunder Mifflin become obsessed with their weight in the wake of corporate weight-loss initiatives; Michael pursues a friendship with Holly; Jim misses Pam, who is away at art school.

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 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.

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.

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.

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.

Leonard has to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.

The guys try to figure out who hacked Sheldon's online-game account.

Amy and Sheldon spread gossip as part of an experiment; Howard decides to take a big step in his relationship with Bernadette.

Priya dissects the roommate agreement; the ladies take Sheldon dancing.

Raj tries to cure his social anxiety; Penny spies on Leonard and his girlfriend through Bernadette.

Howard's mom winds up in the hospital after hearing news of her son's engagement to Bernadette.

There's a new boss in town. Much to the dismay of Michael and many of the employees, Ryan returns to the Scranton branch of Dunder Mifflin to bring the company into the digital age.

There's a new boss in town. Much to the dismay of Michael and many of the employees, Ryan returns to the Scranton branch of Dunder Mifflin to bring the company into the digital age.

Michael anticipates going to New York for the company's Website launch party; Dwight tries to sell more paper in one day than the Website does.

Michael anticipates going to New York for the company's Website launch party; Dwight tries to sell more paper in one day than the Website does.

Michael seizes the opportunity to exhibit his creativity when the Scranton branch must participate in a company ad; Dwight explores an online world.

Though struggling with the ramifications of his extraordinary origin and abilities, young Clark Kent (Henry Cavill) must become a hero and save those he loves from a dire threat.

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.

Carl (Reginald VelJohnson) tries to cut his own Christmas tree but ends up getting lost in the woods with Steve (Jaleel White).

Laura is excited about joining a sorority until she learns Steve has been named the star of its annual geek party.

Sheldon is forced to tutor Georgie when poor grades threaten his brother's future on the football team.

When Sheldon moves to Dallas to attend a school for gifted children, the family struggles to cope with his absence.

Sheldon is required to attend Sunday school, but when he returns he decides to learn all he can about a multitude of religions.

Sheldon asks for a computer and unknowingly sparks an argument between Mary and George Sr. over the family's finances; Mary and the twins move in with Meemaw.

Sheldon's fear of germs leads him to detention when flu season hits Medford, and he goes to extremes to stay healthy.

When Mary takes a job as church secretary, she finds herself becoming Pastor Jeff's marriage counselor; Sheldon and Missy spend their first afternoon home alone.

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 fiancé at the altar.

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

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.

Penny worries that she has ruined her relationship with her friends; Sheldon takes over the paintball team.

Amy is caught in the middle when Penny and Sheldon get into an argument over a pre-owned chair; Leonard tries to make his long-distance relationship more exciting.

Amy and Leonard try to become better acquainted; Bernadette, Howard and Mrs. Wolowitz spend the weekend together.

Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.

Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.

Sheldon finds himself competing with the gang for his mother's (Laurie Metcalf) attention when she visits.

An attractive comic book artist tests Leonard and Priya's relationship; Sheldon tries to scare his friends.

Amy is devastated when Penny and Bernadette shop for wedding dresses without her.

Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.

Sheldon is jealous when Stuart (Kevin Sussman), a guy from the comic book store, asks Amy out on a date.

Leonard must face the bully who targeted him in high school; Penny confronts her past actions.

Amy is upset with Sheldon when he isn't impressed with her recent accomplishment; Howard struggles with Bernadette's aversion to children.

Everything could change when Leonard spontaneously invites Penny to a romantic dinner.

Penny and Leonard experiment with their new relationship; Raj forms a bond with his phone's virtual assistant.

A business ethics seminar gets out of control when Michael lets everyone talk about their unethical behavior at work; Jim makes Dwight observe the company's "time theft" policy.

Michael has Dwight go over possible birthing scenarios to prepare for the birth of Jan's baby; Michael tells Holly he will pretend not to like her for Jan's benefit.

Michael helps Pam get a part-time job so she can afford art school; Michael and Holly get an early start on their date night; after the office is robbed, Michael decides to raise money for all the lost items.

Pam is embarrassed when no one else at corporate wears a costume on Halloween; Holly and Michael get shocking news from corporate; Dwight tries to get under Andy's skin.

Jim and Dwight are stunned when they get the results of the annual customer survey report; Jim and Pam decide to spend every minute together; Andy and Angela choose an unusual location for their wedding.

Michael is thrilled when David Wallace sends him on a business trip to Canada; Oscar and Andy become friends when Michael decides to bring them on the trip; Jim counts the days until Pam returns from art school.

Someone made a huge mess in the microwave and refuses to clean it up; Michael must come to terms with the personnel changes in his staff.

Oscar informs Michael that the office must spend a cash surplus or lose it in the next year's budget; Dwight takes Angela and Andy to Schrute Farms to work on their wedding plans.

Meredith's hair catches fire at Phyllis' Moroccan-themed Christmas party; Dwight corners the market on the hottest toy of the holiday season.

Andy remains unaware of Angela's affair with Dwight; Michael is nervous about a corporate meeting with Wallace.

Michael and Dwight go undercover to learn about a competitor; employees hold a debate to decide whether an actress is hot.

Dwight must make amends with the office after his fire-safety seminar goes awry; Michael tries to get his employees to relax; Andy becomes convinced that Pam and Jim are film gurus.

Dwight must make amends with the office after his fire safety seminar goes awry; Michael tries to get his employees to relax; Andy becomes convinced that Pam and Jim are film gurus.

Unable to pull off this week's pickleball and coffee shop challenges, the losing Jokers are forced to participate in an overseas game show hosted by special guest Paul Scheer.

The jokers are posing as salesmen and must sell their bizarre products to focus group participants, then attempt a challenge that turns out to be a mouthful; Sal finds himself in a stinky situation in tonight's punishment with guest star Kal Penn.

The jokers are dishing out as waiters and later grilled by news anchor Rosanna Scotto; finally, the losing joker is in for a horrific treat with guest star Bruce Campbell.

Sheldon makes friends with an upperclassman who introduces him to a new field of science; Mary and George disagree on how to handle Sheldon's blossoming social life.

A disappointing loss at the science fair sends Sheldon's life in a new direction.

Sheldon is bullied by an unlikely character; Mary and George disagree on how to handle the situation.

Mary bans Sheldon from reading a mature comic book; Sheldon decides it's time to stop living under Mary's thumb.

When Sheldon is no longer academically challenged at Medford High, he audits a college class taught by Dr. John Sturgis.

A battle erupts in the neighborhood between the Coopers and the Sparks when Sheldon is terrorized by the Sparks' new dog.

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.

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.

Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose his astronaut nickname.

Sheldon goes to work with Amy in her neurobiology lab when the university forces him to take a vacation; Bernadette asks Howard to sign a prenup.

Sheldon and his nemesis, Kripke, compete for a corner office; Penny feels uncomfortable after receiving a gift from Amy.

Sheldon's routine is turned upside down when his barber gets sick; Wolowitz questions his decision to go into space.

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Major League Baseball postgame interviews, analysis and highlights.

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party; he gets a lesson from Penny and Amy.

When Penny buys Leonard and Sheldon "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock; after a blind date, Raj believes he has met his future wife.

Michael takes Pam with him on a tour of the other branches to explain Scranton's relative success; Dwight and Jim, the new heads of the party planning committee, forget a birthday.

Michael and Pam continue their branch tour; Jim and Dwight try to fulfill their party planning duties; Angela's new cat causes a commotion.

Michael meets a mysterious woman at a blood drive; Dwight and Kevin attend a "Lonely Hearts Party"; Jim and Pam have an awkward lunch with Bob and Phyllis.

Michael comes up with an idea that causes a huge problem in the office; Pam, Jim and Andy each give Kevin different advice on wooing a woman.

Michael makes big plans for his 15th anniversary party at Dunder Mifflin; Jim plays a prank on Dwight that has unexpected results.

Michael's relationship with the new vice president gets increasingly tense; Pam finds the new copier a challenge.

Jim faces Charles during a soccer game in the Dunder Mifflin parking lot; Michael finds himself afraid to face the workday.

Dwight and Andy plan a hunting trip; Charles asks Jim for a "rundown", and Jim tries to figure out what that is; Michael hosts a paper and pancakes luncheon.

Dwight's devotion to Michael is tested; Andy tries to fulfill Jim's emotional needs.

Michael's new company has a hard time making early-morning deliveries; the office struggles to get expense reports in on time when Angela enforces the company policy.

Michael must settle a dispute within the sales team; employees cause trouble when they take the term "casual" Friday too loosely.

Michael brings dancing and coffee to the office; Jim and Pam plan a secret trip.

Michael reunites with Holly (Amy Ryan) at Dunder Mifflin's annual company picnic while the rest of the staff competes in a volleyball tournament.