TBS - East

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.

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.

Dissatisfied with retirement, a 70-year-old widower (Robert De Niro) becomes an intern at an online fashion site and develops a special bond with his young boss (Anne Hathaway).

A harried patriarch (Steve Martin) faces separation anxiety, exorbitant costs and more as he prepares for his daughter's (Kimberly Williams) wedding.

Urkel impresses Laura with his new cooking talent and manages to save a Japanese restaurant from a fire; Carl baby-sits a parrot.

Urkel and Myra (Jaleel White, Michelle Thomas) break up, and Eddie (Darius McCrary) decides to drop out of college to become a cop.

Myra and Stephan work at separating Laura and Steve; Eddie learns an important lesson in firearm safety.

Myra (Michelle Thomas) surprises Steve and Laura (Jaleel White, Kellie Shanygne Williams) on their first date; Harriette (Judyann Elder) gives Carl (Reginald VelJohnson) his ring back.

Myrtle and Greta decide to settle their fight over Eddie in the boxing ring; 3J looks for his biological mother.

A reluctant Laura attends a polka festival with Steve; Carl cramps Eddie's style.

Sheldon studies his family for a psychology project; a Thanksgiving dinner turns into a family fight when George Sr. is offered a job in Oklahoma.

When Sheldon learns that people with stunted childhoods can turn into social outcasts, he tries to act like a kid; Meemaw and Dr. Sturgis' relationship is tested when she teaches him how to drive.

Sheldon experiments on Missy; Georgie joins Mary's bible study to spend more time with his crush, Veronica.

When Sheldon has to spend a few days in the hospital, he turns into the world's worst patient; Missy gets a taste of what life would be like without her twin.

Sheldon attempts to build a nuclear reactor; a university cocktail party gets heated when Dr. Sturgis' colleague flirts with Meemaw; Georgie is heartbroken when he learns Veronica has a boyfriend.

Sheldon uses his new friendship with the school bully to boss Georgie around; Missy steals Meemaw's makeup for picture day.

Ross and Chandler argue over authorship of a joke; a question from Monica puts Phoebe on the spot; Joey reluctantly takes a job at Central Perk.

Rachel is worried about her sister's flirtation with Ross; sickly Monica is well enough to seduce Chandler; Joey uses free food to lure women to date him.

Rachel and her sister get into a heated sibling rivalry over Ross; Chandler confesses he hasn't cried since he was a child.

When Rachel tells her friends about Barry and Mindy's impending divorce, the others speculate how their lives could have turned out if they had chosen different paths.

When Rachel tells her friends about Barry and Mindy's impending divorce, the others speculate how their lives could have turned out if they had chosen different paths.

Chandler's anniversary gift to Monica is really one an ex-girlfriend gave him; Joey hires a look-alike; Ross tries to teach martial arts to Rachel.

Ross toys with dating one of his students; a curling iron starts a fire in Phoebe and Rachel's apartment.

Monica and Phoebe compete to find Rachel a date; Joey tries to con his friends into buying him a new refrigerator.

Chandler jeopardizes Joey's chances for the lead role in a TV series when he forgets to take down a message.

Ross recruits some friends to go with him on his first meeting with Elizabeth's father (Bruce Willis); Phoebe makes Chandler and Monica paranoid by chronicling their every move.

Elizabeth's father (Bruce Willis) threatens to get Ross fired if he does not stop dating his daughter.

Chandler asks Phoebe to help him choose a special ring; Rachel urges Paul (Bruce Willis) to express his feelings.

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

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

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

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

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

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

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

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

The team struggles to keep its newfound family together as it tries to unravel the mystery of Peter Quill's true parentage in the outer reaches of the galaxy.

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.

After leaving her all-female island for the first time, Wonder Woman (Gal Gadot) discovers her full powers and true destiny while fighting alongside men in a war to end all wars.

Joe, Sal, Q and Murr showcase their creative vision by unveiling their new inventions and learn what it takes to get a date in the digital age; the losing joker embraces the role of a lifetime.

Murr, Q, Joe and Sal prove their good taste, and later prove they can hack it in the professional world; the safe guys give the losing joker a semi that he must show off to an unsuspecting crowd.

Sal, Q, Murr, and Joe take the law into their own hands, and they misplace the trust of their own children; finally, the losing joker must pod up with a stranger.

Four longtime friends compete to embarrass each other with a series of hilarious dares; if they refuse, they lose.

When Gloria's ex-boyfriend stops by for a visit, his striking resemblance to Manny makes Jay wonder; Phil agonizes over getting the perfect anniversary gift for Claire; Lily gets into a fight at school over bras.

Haley's boss tries to buy Gloria's salsa; Mitchell gets Cam the police ride-along he's always dreamed of.

When Dede drops by unexpectedly, Mitchell and Cam come to a realization about her effect on their lives; Phil, Luke, Alex and Haley all have different bad news to break to Claire and compete about when to do it.

Haley meets Arvin's parents but fate leads to an unexpected reunion with all of her ex-boyfriends; the family goes to a nursing home to visit with Jay's sister; Phil, Cam and Gloria end up getting trapped in the home's basement.

Mitchell sneaks out to Hero-Con with Phil; Gloria's dinosaur party for Joe is ruined when her nemesis upstages her with a far bigger and better party next door.

The family gets together for the annual Fourth of July parade where Jay acts as the grand marshal; Haley's farewell to Arvin doesn't go as well as expected and she is distracted by the return of an old flame.

Haley looks to Mitch and Cam for relationship advice; Gloria suspects Manny's Canadian girlfriend is made up and tries to find out the real truth.

Phil stumbles into an exciting new career after visiting Luke's college; Claire deals with her dad and the merger of Pritchett's Closets with a tech-savvy, hipper company; Mitch's new high-profile case is marred by an unflattering courtroom sketch.

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

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.

Fortified in a massive, armored truck, loner Mad Max joins Imperator Furiosa and her band of rebels as they try to outrun a warlord and his henchmen in a deadly high-speed chase through the wasteland.

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.

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

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

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.

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.

A resourceful teen takes her younger sister's place in a brutal contest in which youths from each of 12 districts fight to the death on live television.

After their unprecedented victory in the 74th Hunger Games, Katniss Everdeen and Peeta Mellark embark on a Victors Tour. Katniss senses rebellion is stirring, but a cruel change in the upcoming 75th Hunger Games may change Panem forever.

Sal, Q and Murr clear the room as eccentric exterminators and produce a controversial infomercial; comic Eric André drops by to give the losing Joker an awkward release.