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Leonard fails to stop Sheldon from overreacting after a past slight comes to light, and Penny has a run-in with Raj's former girlfriend Lucy.

Howard's mother has a say when he and Bernadette host Thanksgiving dinner for the gang. Penny and Leonard must deal with a mistake from her past.

Marissa grapples with doubts. Mido considers leaving the U.S. Maxwell's family is shocked by Ashia's age. Annabelle is upset at Shea's flirting.

Krystal is a witch who wants to clear a curse of a cyst from her face. Keven wants a butt lipoma removed to get his bum back into a regular shape.

When Axl is suspended for skipping school, Mike decides it's time to teach his son a life lesson and makes him go to work with him at the quarry.

Frankie's best laid plans go awry when she convinces Mike and the kids that the Heck family should host a foreign exchange student from Japan.

Excited over being invited to the neighbourhood Halloween party, Frankie encourages Mike to dress up in costume.

J-Fab is the life of the party, but her shoulder bump is seriously cramping her style. Teresa's red face and bumpy nose make her feel like a monster.

When Angela's family is unable to join her on her weight-loss journey, she reaches out to an old love, who is willing to go to Texas with her.

Cassie loves Kristen Stewart from the Twilight films, and wants a dress to transform her into a vampy princess! Tomboy Crystal seeks a more feminine look.

Emily needs a practical and beautiful form-fitting dress so she can help her paralysed fiancé down the aisle. Artist Tanya envisions a romantic wedding gown.

While Mary and George take a trip, Georgie freaks out when his girlfriend thinks she's pregnant. Dale and Meemaw work out their relationship issues.

While college orientation does not go as Sheldon planned, Mary is mistaken for a university student and invited to a party.

Sheldon's first day of college is derailed by his new philosophy teacher. Mary and Brenda live vicariously through Missy's first day of middle school.

Meemaw takes matters into her own hands when Sheldon's philosophy teacher, Professor Ericson, sends him into a tailspin.

Sheldon and his dad dine with President Hagemeyer and a university benefactor. Also, Dale and his ex-wife invite Meemaw to their son's wedding.

Sheldon campaigns to become Dr. Linkletter's lab assistant. Georgie enlists the drama teacher, to help with a surprising business venture.

Dr. Linkletter pushes Sheldon to make friends with his fellow students, and Georgie gets a pager.

Sheldon, Dr. Linkletter and Meemaw team up on a science experiment. Mary is jealous that Pastor Jeff and Brenda are spending so much time together.

A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Howard rethinks his decision to go into space.

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party.

It's a dream come true for Sheldon when he has a close encounter with his hero, Mr. Spock -legendary sci-fi icon Leonard Nimoy.

When Wolowitz gets to work with world-renowned scientist, Stephen Hawking, Sheldon is willing to do anything to meet his hero.

Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online.

When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears - and Bernadette's dad.

When Howard and Bernadette decide they want to be married before his NASA space launch, the gang rushes to put on a wedding.

Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form.

After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts.

While the pressure of being in space starts to take its toll on Howard, Amy feels threatened when Sheldon hires a young female assistant, Alex.

When Howard returns from space, he doesn't get the hero's welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.

The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction.

Sheldon's friendship with renowned scientist Stephen Hawking is threatened by a game of 'Words with Friends.

Bernadette pressures Howard to move out of his mother's house. Sheldon finds himself caught in the middle of a fight between Amy and Wil Wheaton.

Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship.

When the University reassigns Sheldon's unused parking spot to Howard, the ensuing turf battle affects the whole gang.

Sheldon plays nursemaid to a sick Amy, while Howard attempts to bond with his father-in-law on an upcoming fishing trip.

Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out.

Sheldon is accused of sexual harassment at the University and winds up dragging Leonard, Raj and Howard into the fray.

Leonard's car is stolen when the guys take a road trip to a comic book convention in Bakersfield, dressed as Star Trek characters.

Dr. Lee meets Jon, who suffers from a huge bump on his shoulder blade. Plus, April wants to get married but feels hideous due to her bumpy underarm.

Jack fainted during a previous attempt to remove his throat bump. Can Dr. Lee help this time? Plus, Dr. Tomassian reconstructs Victoria's earlobes.

With pandemic safety protocols in place, Dr. Lee reopens her office. Patients include Monica, who has a large birthmark growing on the side of her face.

Alonso's lipomas are holding him back at the gym. A comic book enthusiast deals with lumps on her face. Jeffrey has a leaky head lump named Larry.

Robert carries the weight of the huge lump on his head. Christina has big, veiny, liquid-filled balloons next to her eyes. Felipe has severe dry skin.

Natasha's massive ear keloids are keeping her from pursuing her modelling dreams. Eight-year-old Wynter wants her scaly mermaid skin cured.

Bed-bound for two years, Lashanta relies on her kids to clean and feed her. She wants to join Dr. Now's programme but needs help to leave the house.

Randy looks back at his favourite appointments, including a Boston Marathon bombing survivor. And, a US Air Force veteran receives VIP treatment.

The Geezer Bus And A New Model. Sheldon refuses to ride in a car after getting into an accident with Meemaw. Meemaw is forced to take the church shuttle.

When the IRS accuses Sheldon of making a mistake, he stops at nothing to prove them wrong. Meanwhile, Dale is forced to get a colonoscopy.

Sheldon faces consequences after installing a pirated computer game. Mary and Meemaw take Brenda out for Girls Night, and George watches Billy.

Sheldon is at odds with Paige once again when she considers enrolling at East Texas Tech. Mary seeks the advice of June when looking for a change.

The Coopers discuss the possibilities of black holes and alternate universes when Dr. Sturgis comes over for dinner.

Missy's first heartbreak triggers a series of events that lead the Cooper family to the brink.

Outraged that he's being forced to work with his university nemesis, Barry Kripke, Sheldon faces a crisis of conscience.

When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away.

While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store.

After a terrible date, Raj vows to never leave his apartment again. Meanwhile, Penny actually impresses Sheldon with her acting skills.

Leonard, Sheldon and Howard try to advance the cause of women in science by speaking with junior high girls about their future careers.

When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment.

Let the battle begin! Leonard, Sheldon and Raj fight for tenure at the University - and the competition heats up when the girls get involved.

After one of his favourite TV shows gets cancelled too soon, Sheldon feels lost, so Amy tries to help him get over his compulsive need for closure.

Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette.

When the girls' trip to Vegas falls through, the guys invite them to a Dungeons & Dragons date. Meanwhile, Raj and Lucy go on an awkward date.

When Leonard is offered an exciting new job opportunity overseas, Sheldon grows jealous. Raj pushes Lucy a little too far in their relationship.

Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup.

Leonard returns from his expedition and finds things chilly between him and Sheldon, and Howard faces questions about his masculinity.

Raj puts together a scientific scavenger hunt that turns into serious, cutthroat competition that brings out the best - and the worst - in the gang.

Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles.

Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette.

Sheldon fears his major scientific breakthrough may haunt him for the rest of his career. Howard makes a grand romantic gesture to Bernadette.

When Sheldon's childhood hero, Professor Proton, seeks Leonard's help with an experiment, Sheldon decides to befriend another TV science guy.

Leonard fails to stop Sheldon from overreacting after a past slight comes to light, and Penny has a run-in with Raj's former girlfriend Lucy.

Howard's mother has a say when he and Bernadette host Thanksgiving dinner for the gang. Penny and Leonard must deal with a mistake from her past.

Georgie helps Connor impress his new crush, while Mandy, Audrey and Jim struggle to butt out of Connor's love life.

Baby Fight! Georgie and Mandy worry they're not on the same page when they disagree about having another kid, and Mary, Jim and Audrey struggle to stay out of it.

Dara Ó Briain presents the final summer special featuring unseen material, out-takes and best bits from the past few weeks.

Ed Gamble hosts as comedians defend unacceptable opinions: Vittorio Angelone on a misunderstood Trump and Fatiha El-Ghorri backing arranged marriage.

Dara Ó Briain presents the final summer special featuring unseen material, out-takes and best bits from the past few weeks.

Sheldon and Missy both run away from home, while Mary gets some upsetting news about her husband, George.

Nhan has an extremely red birthmark that covers half of his face. Debbie worries that her shoulder lump will prematurely age her.

Jess is looking for love but has a giant bump on his neck. Former NFL defensive tackle, Marcell Dareus, hopes Dr. Lee can tackle his forehead lipoma.

Nesrin wants a mermaid-style gown, but her sister hates everything she's tried on. Jennifer races the clock to find a frock, but her sister gets entourage fatigue.

Having spent the last two years in his bed due to his weight, Cillas' food addiction prevents him from being there for his fiancée and her three daughters.

Randy Will Show You The Door. Bridal model Jessica brings her outspoken clique with her to Kleinfeld's, but Randy threatens to kick them out. Plus, Marlo returns with her frank twin.

When Axl is suspended for skipping school, Mike decides it's time to teach his son a life lesson and makes him go to work with him at the quarry.

Frankie's best laid plans go awry when she convinces Mike and the kids that the Heck family should host a foreign exchange student from Japan.

Excited over being invited to the neighbourhood Halloween party, Frankie encourages Mike to dress up in costume.

The Coopers discuss the possibilities of black holes and alternate universes when Dr. Sturgis comes over for dinner.

Missy's first heartbreak triggers a series of events that lead the Cooper family to the brink.

Sheldon and Missy both run away from home, while Mary gets some upsetting news about her husband, George.

Leonard returns from his expedition and finds things chilly between him and Sheldon, and Howard faces questions about his masculinity.

Raj puts together a scientific scavenger hunt that turns into serious, cutthroat competition that brings out the best - and the worst - in the gang.

Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles.

Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette.

Sheldon fears his major scientific breakthrough may haunt him for the rest of his career. Howard makes a grand romantic gesture to Bernadette.

When Sheldon's childhood hero, Professor Proton, seeks Leonard's help with an experiment, Sheldon decides to befriend another TV science guy.

Leonard fails to stop Sheldon from overreacting after a past slight comes to light, and Penny has a run-in with Raj's former girlfriend Lucy.

Howard's mother has a say when he and Bernadette host Thanksgiving dinner for the gang. Penny and Leonard must deal with a mistake from her past.

Brick demands to hear the true story about the day he was born, a family secret. Axl is confused by his attractive but incompetent new manager.

Brick is sick and tired of being forced to accompany Frankie on her weekend errands and pleads with her to let him stay home alone.

Mike begrudgingly invites his brother Rusty and his father Big Mike, who has recently broken his hip, to join him for the annual family Thanksgiving.

Sheldon encourages Missy to question the Bible. Meemaw determines to catch George Sr. in a lie, and Mary helps Pastor Jeff search for a youth pastor.

While Sheldon tries to convince Dr. Sturgis to return to the university, Georgie upsets the family when he makes a life-changing decision.

Pish Posh And A Secret Room. While Meemaw opens a secret gambling room, Sheldon, Missy and Georgie adapt to new living arrangements.

Amy and Leonard try to help Sheldon when his accidental scientific discovery is disproved. Howard and Bernadette open their home to Raj for a week.

With Sheldon in Texas, the gang decorates for Christmas, and they each contemplate if they would have had a wonderful life if they'd never met him.

Penny turns to Leonard after her guest appearance doesn't turn out well. Sheldon works on his sense of humour, and Raj practices talking to girls.

Penny makes a big step toward pursuing a full-time acting career, and Sheldon is forced to take a vacation.

Unable to score tickets for Comic-Con, Sheldon decides to stage his own comic-book convention, while the ladies attempt to act like grown-ups.

Amy talks Sheldon into a romantic Valentine's Day getaway to Napa Valley. Leonard and Penny make an emergency visit to the vet with Raj's dog.

Leonard's purchase of a new dining room table doesn't sit well with Sheldon, and Bernadette isn't happy about Howard taking another trip to space.

Things turn rocky between Sheldon and Wolowitz, and Bernadette steps in to mediate. Penny is offered a movie role that may prove embarrassing.

Dara Ó Briain presents the final summer special featuring unseen material, out-takes and best bits from the past few weeks.

The evil Decepticons regroup with a new plan to destroy the world. It's up to college student Sam to help Optimus Prime and the Autobots save the day.

Brick demands to hear the true story about the day he was born, a family secret. Axl is confused by his attractive but incompetent new manager.

Brick is sick and tired of being forced to accompany Frankie on her weekend errands and pleads with her to let him stay home alone.

Mike begrudgingly invites his brother Rusty and his father Big Mike, who has recently broken his hip, to join him for the annual family Thanksgiving.

Brent has a tricep bump that could be intertwined in his muscle. Plus, Jeb avoids the beach because of the massive number of bumps all over his body.

With severe lymphedema Mercedes can barely stand, and her family helps her care for her young kids. To successfully lose weight she must confront her past trauma.

Fussy bride Katie has fruitlessly tried on countless dresses and Antonia has a long list of what she doesn't want on a wedding dress. Can David and Danielle deliver.

Brick demands to hear the true story about the day he was born, a family secret. Axl is confused by his attractive but incompetent new manager.

Brick is sick and tired of being forced to accompany Frankie on her weekend errands and pleads with her to let him stay home alone.

Mike begrudgingly invites his brother Rusty and his father Big Mike, who has recently broken his hip, to join him for the annual family Thanksgiving.

Sheldon encourages Missy to question the Bible. Meemaw determines to catch George Sr. in a lie, and Mary helps Pastor Jeff search for a youth pastor.

While Sheldon tries to convince Dr. Sturgis to return to the university, Georgie upsets the family when he makes a life-changing decision.

Pish Posh And A Secret Room. While Meemaw opens a secret gambling room, Sheldon, Missy and Georgie adapt to new living arrangements.

Amy and Leonard try to help Sheldon when his accidental scientific discovery is disproved. Howard and Bernadette open their home to Raj for a week.

With Sheldon in Texas, the gang decorates for Christmas, and they each contemplate if they would have had a wonderful life if they'd never met him.

Penny turns to Leonard after her guest appearance doesn't turn out well. Sheldon works on his sense of humour, and Raj practices talking to girls.

Penny makes a big step toward pursuing a full-time acting career, and Sheldon is forced to take a vacation.

Unable to score tickets for Comic-Con, Sheldon decides to stage his own comic-book convention, while the ladies attempt to act like grown-ups.

Amy talks Sheldon into a romantic Valentine's Day getaway to Napa Valley. Leonard and Penny make an emergency visit to the vet with Raj's dog.

Leonard's purchase of a new dining room table doesn't sit well with Sheldon, and Bernadette isn't happy about Howard taking another trip to space.

Things turn rocky between Sheldon and Wolowitz, and Bernadette steps in to mediate. Penny is offered a movie role that may prove embarrassing.

Frankie's parents, Pat and Tag, come to town to spend the holiday with the family much to Mike's dismay.

After years of never having time for themselves, Frankie and Mike decide to take charge of their lives and regain control over the Heck household.

Mike freezes Frankie out because he can't fathom how she inadvertently paid $200 for a small bottle of eye cream that she thought was priced at $20.

While Mary's away, George finds himself giving advice on Missy's love life. And Georgie has a solution for Meemaw's business woes.

While Missy asks some uncomfortable questions about sex in church, Meemaw and Georgie go into business together.

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

Sheldon's visit to see his mummy forces him to start addressing a new reality. The gang speculate about where they might be in 20 years.

Raj wrestles with dating two women at the same time, Penny is offered a part in a trashy movie, and Sheldon can't decide between two gaming systems.

Raj and Howard double-date, and the latter is flushed with embarrassment after Raj's girlfriend reveals a secret she knows about Howard.

Leonard reinstates Anything Can Happen Thursday, and Sheldon attempts something spontaneous. Raj requests help from Howard in prepping for a date.

Sheldon receives counselling from his childhood TV idol, while Penny and Leonard reach a relationship milestone and turn it into a competition.

A trying day at the movie shoot makes Penny question her life choices. Caring for a bedridden Mrs. Wolowitz is a challenge for Howard and Bernadette.

Sheldon gets caught up in all the life-altering changes going on around him and considers a monumental move. Raj and Emily take it to the next level.

Amy and Leonard take a road trip, Penny has an interview at Bernadette's company, and Howard has issues with Stuart's relationship with his mum.

Emma can help their lives move on by treating their skin. There's no quick fix for Roger's gout, and Amanda's lipoma is tricky.

I Know Exactly What This Is. Dr. Emma examines the mystery growths on Chris's scalp. Plus, she treats Cianca's debilitating hands and the after-effects of Dave's sunburn.