Teleshopping.

Vince Takes A Bath. When Vince throws out his back, Joyce disappears, leaving Mike and Molly to care for him. Meanwhile, the newlyweds struggle to write thank-you notes.

Mike Likes Cake. Molly is mortified when she reviews her wedding photos and sees that Mike either has his mouth open or his eyes closed in every single shot.

Molly In The Middle. Mike and Molly decide they're ready to start trying for a baby. And Carl gets upset when he learns that Molly is still spending time with Christina.

Teenager Soup. Sheldon fakes being sick to avoid a swim test at school. Meanwhile, Dr. Sturgis spies on Meemaw's new boyfriend.

A Live Chicken. George and Meemaw struggle to manage the Cooper household while Mary plans Pastor Jeff's wedding.

Body Glitter, Mall Safety Kit. Sheldon catches a struggling Paige shoplifting. Meanwhile, George Sr. is furious when Georgie tries to buy his way out of chores.

The Convention Conundrum. 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.

The Locomotive Manipulation. 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.

The Table Polarization. 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.

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

The Mommy Observation. 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.

The Indecision Amalgamation. 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.

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

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

Mike's Boss. Mike is put in an uncomfortable situation when his mom starts dating his boss, despite his many reservations.

Yard Sale. With the house feeling crowded, Molly decides to have a yard sale, while Mike and the guys take Carl on a fishing trip.

Thanksgiving Is Cancelled. When Mike gets sick for Thanksgiving, Molly is excited that she won't have to cook until Vince invites his brother, Frankie, to town.

Contracts, Rules. George and Georgie go camping with Meemaw's new boyfriend, Dale, but things get complicated when her ex-boyfriend tags along.

A Slump, A Cross. Sheldon and Georgie bond over a money-making opportunity. Meanwhile, Mary is concerned when Missy misuses religion.

A Boyfriend's Ex-Wife. Meemaw meets Dale's ex-wife, while Sheldon is forced to work on a group project with reluctant college students.

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

The Gorilla Dissolution. 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.

The Status Quo Combustion. 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.

The Locomotion Interruption. 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.

The Junior Professor Solution. Howard signs up to take Sheldon's class, and tensions between Penny and Bernadette give Amy an opportunity to play one against the other.

The First Pitch Insufficiency. NASA asks Wolowitz to throw the first pitch at an Angels baseball game. And Sheldon says that he and Amy are a better couple than Leonard and Penny.

The Hook-Up Reverberation. Raj's girlfriend gives Penny the cold shoulder after he tells her about their history, and the guys consider buying into Stuart's comic-book emporium.

The Focus Attenuation. Amy and Bernadette accuse Penny of becoming a party pooper. And the guys brainstorm about inventing something cool.

It's Going To Be A Bumpy Ride. Lisa travels to Nigeria to meet Daniel. Jovon wonders if marrying Annalyn before meeting was a mistake. Emma and Ziad try to move past their fight.

Thanksgiving. Mandy struggles to get Georgie's family to join him for his first Thanksgiving without his dad.

A Regular Samaritan. Georgie joins a church to sell tires to the congregation. Mandy worries there is more to the story than that.

Shoulder Boulder. Stacey's shoulder growth prevents her from being the playful teacher she once was. Matthew worries that his mysterious shin rash may be dangerous.

Brain Pimple. Robert has a tomato-sized growth on his butt cheek that causes him pain and discomfort. Sharon has a stinky, squirting cyst under her breast.

David's Journey. David grew up in foster care and didn't develop a sense of self-worth. Now he weighs 800 pounds and needs to find the motivation to save his own life.

This Is My Fiancé.And This Is His Wife! Kleinfeld is stunned when Jennifer brings her fiancé - and his wife! Meanwhile, Amanda Barrasso seeks a dress fit for an ice queen.

Empire State Of Bride. Bride Emily arrives with only two days until her sky-high vow renewal. Meanwhile, Olympic athlete Queen Harrison faces hurdles about her dress decision!

Teleshopping.

Teleshopping.

Quirky Eggheads. After Dr. Sturgis experiences a nervous breakdown, Mary worries Sheldon is headed down a similar path. Georgie finds he has a knack for sales.

Broom Closet. Without Dr. Sturgis's university class, Sheldon takes his education into his own hands. Mary helps Pastor Jeff avoid temptation with his girlfriend.

An Entrepreneurialist. Sheldon leaves town after a fight with Meemaw and his parents. Meanwhile, Georgie tries to impress Veronica with his new business venture.

Hobbitses, Physicses. Sheldon's obsession with The Lord of the Rings leads to an unhealthy habit. Missy asks her dad to teach her how to play catch.

Pineapple And Male Friendship. After being released from the psychiatric hospital, Dr. Sturgis unexpectedly breaks up with Meemaw.

A Parasol And A Hell Of An Arm. A church carnival leads Missy to try out for the baseball team. Meanwhile, Meemaw struggles after her breakup with Dr. Sturgis.

Thanksgiving. Mandy struggles to get Georgie's family to join him for his first Thanksgiving without his dad.

A Regular Samaritan. Georgie joins a church to sell tires to the congregation. Mandy worries there is more to the story than that.

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

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

The Tangible Affection Proof. 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.

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

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

The Closet Reconfiguration. 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.

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

The Closure Alternative. 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.

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

The Love Spell Potential. 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.

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

The Hofstadter Insufficiency. 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.

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

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

The Raiders Minimization. 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.

The Workplace Proximity. 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.

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

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

The Itchy Brain Simulation. 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.

The Thanksgiving Decoupling. 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.

An insurance agent's perfect routine begins to unravel when he starts suspecting that his entire world is part of a massive television production.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Sara Pascoe, Ed Byrne and Russell Howard.

Pongo Pygmaeus And Spitting. Sheldon starts the first internet flame war, and Meemaw is unhappy when George spends time with her new boyfriend.

The Sin Of Greed. The university tries to recruit Sheldon, through George. Georgie gets a job working for Meemaw's new boyfriend. Mary decides to rid her home of greed.

The Exorcyst. Covered in bumps, Keke is embarrassed to be intimate with her husband. Corey has been labelled a devil worshipper because of his forehead growth.

Geno And Nico's Journey. Geno was raised with lots of love and food but now he's living with his mum and eating himself to death. He and his cousin pledge to both lose weight.

Everything Is On The Line. Excitement's in the air for both the brides and Randy who's going back to his bridal design roots! Jenni Pulos has a surprise for her friend, bride Monica.

Randy Just Showed You The Door! Twins Marlo and Margo visit the salon but a major secret threatens to sabotage the fitting. Plus, Bride Val wants a gown fit for her icy wedding.

Teleshopping.

Teleshopping.

A Party Invitation, Football. Mary gets Pastor Jeff involved when Sheldon isn't invited to Billy's birthday party. George, meanwhile, has 'male-bonding time' with Dr. Sturgis.

Teenager Soup. Sheldon fakes being sick to avoid a swim test at school. Meanwhile, Dr. Sturgis spies on Meemaw's new boyfriend.

A Live Chicken. George and Meemaw struggle to manage the Cooper household while Mary plans Pastor Jeff's wedding.

Body Glitter, Mall Safety Kit. Sheldon catches a struggling Paige shoplifting. Meanwhile, George Sr. is furious when Georgie tries to buy his way out of chores.

Contracts, Rules. George and Georgie go camping with Meemaw's new boyfriend, Dale, but things get complicated when her ex-boyfriend tags along.

A Slump, A Cross. Sheldon and Georgie bond over a money-making opportunity. Meanwhile, Mary is concerned when Missy misuses religion.

The Discovery Dissipation. 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.

The Cooper Extraction. 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.

The Hesitation Ramification. 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.

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

The Convention Conundrum. 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.

The Locomotive Manipulation. 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.

The Table Polarization. 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.

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

The Mommy Observation. 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.

The Indecision Amalgamation. 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.

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

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

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

The Gorilla Dissolution. 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.

The Status Quo Combustion. 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.

The Locomotion Interruption. 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.

The Junior Professor Solution. Howard signs up to take Sheldon's class, and tensions between Penny and Bernadette give Amy an opportunity to play one against the other.

The First Pitch Insufficiency. NASA asks Wolowitz to throw the first pitch at an Angels baseball game. And Sheldon says that he and Amy are a better couple than Leonard and Penny.

The Hook-Up Reverberation. Raj's girlfriend gives Penny the cold shoulder after he tells her about their history, and the guys consider buying into Stuart's comic-book emporium.

The Focus Attenuation. Amy and Bernadette accuse Penny of becoming a party pooper. And the guys brainstorm about inventing something cool.

An Old Mustang. Georgie worries that he's leaving Connor out of his new project with Jim. Meanwhile, Mandy and Audrey struggle to decorate CeeCee's nursery.

Diet Crap. Tensions rise when Georgie intrudes on Mandy's new sales gig. Meanwhile, Audrey's conflicted when Jim makes it a point not to coddle Connor.

In the satirical panel show with a standup twist, Dara Ó Briain hosts as two teams of top comedians battle to poke fun at the week's news.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Sara Pascoe, Ed Byrne and Russell Howard.

Full Volume. Guz upgrades his with a thunderous stereo. Plus, he meets sound guru Iceman Ian and learns drifting tips from Aleyna.

A Boyfriend's Ex-Wife. Meemaw meets Dale's ex-wife, while Sheldon is forced to work on a group project with reluctant college students.

Numbing Nevus. Monica returns in the hopes that Dr. Lee can remove more of her face growths. Ken has several large cysts on his head that he has tried to remove on his own.

A Fox in the Henhouse. When bride E'terica's fiancé questions her taste in wedding gowns, he also tests her self-esteem. Plus, Katy's mum isn't ready let go of her daughter.

Latonya's Journey. After five years in a scooter, Latonya's weight has made her almost immobile. She doesn't want to give up her food comforts, but will she do it for love?

A Dress To Match My Black Heart. Feisty Camila's desire to buy a black dress may push her equally fiery mother over the edge! Plus, will Ally's second custom dress arrive in time?

I'm Having A Moment. Shopaholic Courtney wants to look at every dress in Kleinfeld! Brianna wants a '50 Shades'-themed frock. Angela craves a tasteful gown for her circus wedding.

Teleshopping.

Teleshopping.

Mike's Boss. Mike is put in an uncomfortable situation when his mom starts dating his boss, despite his many reservations.

Yard Sale. With the house feeling crowded, Molly decides to have a yard sale, while Mike and the guys take Carl on a fishing trip.

Thanksgiving Is Cancelled. When Mike gets sick for Thanksgiving, Molly is excited that she won't have to cook until Vince invites his brother, Frankie, to town.

Contracts, Rules. George and Georgie go camping with Meemaw's new boyfriend, Dale, but things get complicated when her ex-boyfriend tags along.

A Slump, A Cross. Sheldon and Georgie bond over a money-making opportunity. Meanwhile, Mary is concerned when Missy misuses religion.

A Boyfriend's Ex-Wife. Meemaw meets Dale's ex-wife, while Sheldon is forced to work on a group project with reluctant college students.

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

The Gorilla Dissolution. 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.

The Status Quo Combustion. 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.

The Locomotion Interruption. 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.

The Junior Professor Solution. Howard signs up to take Sheldon's class, and tensions between Penny and Bernadette give Amy an opportunity to play one against the other.

The First Pitch Insufficiency. NASA asks Wolowitz to throw the first pitch at an Angels baseball game. And Sheldon says that he and Amy are a better couple than Leonard and Penny.

The Hook-Up Reverberation. Raj's girlfriend gives Penny the cold shoulder after he tells her about their history, and the guys consider buying into Stuart's comic-book emporium.

The Focus Attenuation. Amy and Bernadette accuse Penny of becoming a party pooper. And the guys brainstorm about inventing something cool.

Mike Likes Briefs. When Mike gets nervous after Molly doesn't get pregnant after weeks of trying to have a child, he turns to Carl and Samuel for advice.

Mike Takes A Test. Molly encourages Mike to pursue a detective position on the force, but the stress of taking the qualification exam starts to take a toll.

Karaoke Christmas. Mike dresses as Santa but feels more like the Grinch when he can't contain his frustrations over Molly's Christmas spending.

Pasadena. Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

An Academic Crime. Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

A Couple Bruised Ribs. When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

The Expedition Approximation. Sheldon and Raj go on an expedition that turns into a test of how long before they get under each other's skin. Leonard and Penny argue about money.

Misinterpretation Agitation. Penny's sales pitch leaves a doctor-client smitten and the guys help her deal with it, and Bernadette and Amy debate female scientists and sexuality.

The Prom Equivalency. Amy and Bernadette organise a prom to be held atop the guys' apartment complex, but Sheldon is leery of all the prom pomp, circumstance and romancing.

The Septum Deviation. Leonard needs surgery for a deviated septum, and Sheldon feels an operation is too dangerous and that his roommate may not make it out alive.

The Champagne Reflection. Sheldon bids farewell to his Fun With Flags podcast. Leonard, Howard and Raj probe a late professor's research in search of some hidden significance.

The Clean Room Infiltration. Amy plans a Victorian dinner for Christmas Eve, while Raj, Leonard and Howard try to remove a pigeon that flew into the clean room at the university.

The Space Probe Disintegration. Raj awaits data from a space probe in which he was involved. Later, Leonard and Sheldon go dress shopping with Penny and Amy.

The Anxiety Optimization. Sheldon becomes concerned that his cushy lifestyle is impacting his professional progress, so he asks the gang to make life more difficult for him.

Stephen Collins, America's Dad. Stephen Collins, 7th Heaven's beloved dad and moral icon, fell from grace in 2014 when a recording revealed his admission to unthinkable crimes.

For The Love Of Drama. Adea Shabani crossed oceans to pursue her Hollywood dreams. When she suddenly goes missing, investigators pray she won't become one of the city's lost angels.

Driving Miss Lumpy. Corey is a drag queen and has a bump dangling from his backside. And, the large growths on Virginia's upper arms make it difficult to travel in her RV.

Alligator Skin. Terry's nose growth has prevented him from meeting his grandkids. And, Remi has alligator-like skin and is not used to taking care of herself.

Wess' Journey. Wess gets off to a great start in Dr. Now's programme, shedding weight quickly. But when the cravings continue after surgery, Dr. Now sends him to therapy.

Coco Is Not Impressed. 'Doga' instructor Mariah seeks a princess dress and wants her pup Coco to match! Jami is eloping to Paris and she needs a dress as magical as her destination.

Launching A New Marriage. Cat and her fiancée Nicole both need dresses for their beach wedding. The challenge is to find two different gowns, that are still complementary.

Teleshopping.

Teleshopping.

Mike Likes Briefs. When Mike gets nervous after Molly doesn't get pregnant after weeks of trying to have a child, he turns to Carl and Samuel for advice.

Mike Takes A Test. Molly encourages Mike to pursue a detective position on the force, but the stress of taking the qualification exam starts to take a toll.

Karaoke Christmas. Mike dresses as Santa but feels more like the Grinch when he can't contain his frustrations over Molly's Christmas spending.

Pasadena. Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

An Academic Crime. Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

A Couple Bruised Ribs. When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

The Expedition Approximation. Sheldon and Raj go on an expedition that turns into a test of how long before they get under each other's skin. Leonard and Penny argue about money.

Misinterpretation Agitation. Penny's sales pitch leaves a doctor-client smitten and the guys help her deal with it, and Bernadette and Amy debate female scientists and sexuality.

The Prom Equivalency. Amy and Bernadette organise a prom to be held atop the guys' apartment complex, but Sheldon is leery of all the prom pomp, circumstance and romancing.

The Septum Deviation. Leonard needs surgery for a deviated septum, and Sheldon feels an operation is too dangerous and that his roommate may not make it out alive.

The Champagne Reflection. Sheldon bids farewell to his Fun With Flags podcast. Leonard, Howard and Raj probe a late professor's research in search of some hidden significance.

The Clean Room Infiltration. Amy plans a Victorian dinner for Christmas Eve, while Raj, Leonard and Howard try to remove a pigeon that flew into the clean room at the university.

The Space Probe Disintegration. Raj awaits data from a space probe in which he was involved. Later, Leonard and Sheldon go dress shopping with Penny and Amy.

The Anxiety Optimization. Sheldon becomes concerned that his cushy lifestyle is impacting his professional progress, so he asks the gang to make life more difficult for him.

Fish For Breakfast. In an effort to boost their chances of getting pregnant, Molly encourages Mike to join her in giving up caffeine and eating healthier.

Molly's Birthday. Mike prepares to spoil Molly for her birthday, but his plans go awry after he eats psychedelic gelato made by Victoria's friend, Tom.

Carl Gets A Roommate. Mike risks losing his eyebrows when he starts construction on the basement for he and Molly, while Carl invites Samuel to move in with him.

A House For Sale. When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

A Baby Tooth. Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

A Secret Letter. Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

The Troll Manifestation. An online troll rips Leonard and Sheldon's physics paper, and a girls' night out leads to Penny, Amy and Bernadette dishing about embarrassing events.

Comic Book Store Regeneration. Howard gets unsettling news amidst the excitement of the comic book store reopening, and Penny doesn't practice what she preaches.

The Intimacy Acceleration. An experiment designed to make people fall in love piques Penny and Leonard's interest. Meanwhile, Leonard, Amy, Raj and Emily encounter a 'zombie.'.

The Colonization Application. There's trouble in paradise when Amy learns Sheldon signed up for a one-way mission to colonise Mars. Leonard makes an 'adult' purchase for Penny.

The Leftover Thermalization. An electrical short thaws the last meal cooked by Mrs. Wolowitz, and Sheldon and Leonard's work is featured in a magazine, but only one gets credit.

The Skywalker Incursion. Leonard and Sheldon consider dropping by George Lucas' Skywalker Ranch when a speaking engagement puts them nearby.

Fortification Implementation. Sheldon and Amy reach a crossroad, a man claiming to be Wolowitz's half-brother shows up, and Penny and Leonard argue live on Wil Wheaton's podcast.

Communication Deterioration. NASA asks Raj to craft a message for aliens in the event of contact, and Penny must choose between an audition or her job in pharmaceutical sales.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Lou Sanders, Ed Byrne and Milton Jones.

An insurance agent's perfect routine begins to unravel when he starts suspecting that his entire world is part of a massive television production.

My Giant Nose Is Killing Me. Roger has huge growths on his nose that drip pus, attract flies and make breathing difficult. Plus, two sisters share many undiagnosed face bumps.

The Lipoma Psychic. Roger returns and hope Dr. Lee can help with his gigantic nose growths. Christine has lost her essence due to a large growth on her shoulder.

Syreeta's Journey. Syreeta needs help but thinks that anyone trying to help has an ulterior motive. Surgery will be tough if she can't learn to trust the surgeon.

There's A Shark In The Salon! It's sink or swim for Randy when reality star Barbara Corcoran comes in. Bridgette needs a dress to say yes in and then run in a Vegas half-marathon!

I'm The Bride, Leave Some Space! Nikki wants a 'party on a dress' for her New Year's Eve wedding, and there's an unlimited budget! Natalie craves a huge ballgown for her big day.

Teleshopping.

Teleshopping.

Fish For Breakfast. In an effort to boost their chances of getting pregnant, Molly encourages Mike to join her in giving up caffeine and eating healthier.

Molly's Birthday. Mike prepares to spoil Molly for her birthday, but his plans go awry after he eats psychedelic gelato made by Victoria's friend, Tom.

Carl Gets A Roommate. Mike risks losing his eyebrows when he starts construction on the basement for he and Molly, while Carl invites Samuel to move in with him.

A House For Sale. When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

A Baby Tooth. Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

A Secret Letter. Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

The Troll Manifestation. An online troll rips Leonard and Sheldon's physics paper, and a girls' night out leads to Penny, Amy and Bernadette dishing about embarrassing events.

Comic Book Store Regeneration. Howard gets unsettling news amidst the excitement of the comic book store reopening, and Penny doesn't practice what she preaches.

The Intimacy Acceleration. An experiment designed to make people fall in love piques Penny and Leonard's interest. Meanwhile, Leonard, Amy, Raj and Emily encounter a 'zombie.'.

The Colonization Application. There's trouble in paradise when Amy learns Sheldon signed up for a one-way mission to colonise Mars. Leonard makes an 'adult' purchase for Penny.

The Leftover Thermalization. An electrical short thaws the last meal cooked by Mrs. Wolowitz, and Sheldon and Leonard's work is featured in a magazine, but only one gets credit.

The Skywalker Incursion. Leonard and Sheldon consider dropping by George Lucas' Skywalker Ranch when a speaking engagement puts them nearby.

Fortification Implementation. Sheldon and Amy reach a crossroad, a man claiming to be Wolowitz's half-brother shows up, and Penny and Leonard argue live on Wil Wheaton's podcast.

Communication Deterioration. NASA asks Raj to craft a message for aliens in the event of contact, and Penny must choose between an audition or her job in pharmaceutical sales.

The Princess And The Troll. Mike and Molly encourage Harry to take Victoria on a date for Valentine's Day, and everyone is shocked when she accepts.

Mike The Tease. Mike studies male fertility and visits a clinic to ensure that his 'swimmers' are up to the task of starting a family with Molly.

Molly's New Shoes. Molly enjoys some retail therapy and goes off on a shopping spree after Mike storms off over a disagreement and disappears at the mall.

Graduation. After graduating high school, Sheldon has a breakdown when he realises he may not be ready for college. Also, Dale tries to make amends with Meemaw.

A Docent, A Little Lady. While Sheldon volunteers at a local train museum, Missy embarks on a new stage of womanhood, and Georgie discovers his mother's guilty pleasure.

Training Wheels. Sheldon is determined to ride his bike without training wheels and has Missy teach him. Mary and George argue over parenting styles.

The Graduation Transmission. Wolowitz and Sheldon can't get a drone to fly, Leonard nearly misses giving a commencement address, and Raj pits his parents against each other.

The Maternal Combustion. Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion.

The Commitment Determination. Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

The Matrimonial Momentum. Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a time out.

The Separation Oscillation. To ease Penny's mind, Leonard pays a visit to the woman he kissed during his expedition to the North Sea. Sheldon's breakup leads him to retaliate.

The Bachelor Party Corrosion. The guys surprise Leonard with a belated bachelor-party weekend in Mexico, but their plans hit a bump in the road when they get a flat tire.

The 2003 Approximation. Sheldon reverts to 2003 when he learns that Leonard and Penny are moving in together, while Howard and Raj form a band to play at the comic store.

The Perspiration Implementation. When Barry Kripke gives the guys fencing lessons, he makes a point of letting Sheldon know he's interested in dating Amy.

Feels Like Ants Crawling On Me. Dr. Emma is shocked when 35-year-old Faizah's 'herbal' cream bought online leaves her skin red, raw, painfully inflamed, and itchy.

People Point Fingers At Me. Mohammed's body is covered with hundreds of tumours. Dr Emma embarks on three intense surgeries to remove over 150 from his face.

I'm A Squeezer. Dr Emma gets to the bottom of why Claire is incessantly picking her skin. And after 20 years, Robert finally gets a diagnosis for his painful lumps.

Lookin' For Love In Lumpy Places. Gabriel has a huge growth on his clavicle but is terrified of surgery. Karen has dealt with painful, scaly feet for 22 years with no diagnosis.

The Incredible Bulk. Ruben is a personal trainer whose head growth has prevented him from seeing clients. Kaitlin has blue marks and scars due to long-term drug use.

Mark's Journey. Turning down medical advice, Mark believes he can lose 500 pounds on his own. But Dr. Now sees this as another excuse not to change.

Did I Hear Someone Say $16,000? Randy assists brides and auditions models for his runway show. Bride Emanuela wants a sexy ball gown and she'll blow her dad's budget to get it!

That's How You Dress A Lady. Randy's runway show is finally here and it's his big opportunity to show he's back as a designer for good! And bride Jaqueline is at odds with her mum.

Teleshopping.

Teleshopping.

The Princess And The Troll. Mike and Molly encourage Harry to take Victoria on a date for Valentine's Day, and everyone is shocked when she accepts.

Mike The Tease. Mike studies male fertility and visits a clinic to ensure that his 'swimmers' are up to the task of starting a family with Molly.

Molly's New Shoes. Molly enjoys some retail therapy and goes off on a shopping spree after Mike storms off over a disagreement and disappears at the mall.

Graduation. After graduating high school, Sheldon has a breakdown when he realises he may not be ready for college. Also, Dale tries to make amends with Meemaw.

A Docent, A Little Lady. While Sheldon volunteers at a local train museum, Missy embarks on a new stage of womanhood, and Georgie discovers his mother's guilty pleasure.

Training Wheels. Sheldon is determined to ride his bike without training wheels and has Missy teach him. Mary and George argue over parenting styles.

The Graduation Transmission. Wolowitz and Sheldon can't get a drone to fly, Leonard nearly misses giving a commencement address, and Raj pits his parents against each other.

The Maternal Combustion. Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion.

The Commitment Determination. Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

The Matrimonial Momentum. Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a time out.

The Separation Oscillation. To ease Penny's mind, Leonard pays a visit to the woman he kissed during his expedition to the North Sea. Sheldon's breakup leads him to retaliate.

The Bachelor Party Corrosion. The guys surprise Leonard with a belated bachelor-party weekend in Mexico, but their plans hit a bump in the road when they get a flat tire.

The 2003 Approximation. Sheldon reverts to 2003 when he learns that Leonard and Penny are moving in together, while Howard and Raj form a band to play at the comic store.

The Perspiration Implementation. When Barry Kripke gives the guys fencing lessons, he makes a point of letting Sheldon know he's interested in dating Amy.

St Patrick's Day. Carl and Samuel host a party in hopes of attracting some ladies. Meanwhile, Molly reveals secrets from her previous St. Patrick's Day excursions.

Spring Break. Molly joins her sister on a Spring Break road trip to party with Victoria's friends from junior college, while Mike asks his boss for some overtime.

Party Planners. Molly and Peggy try to play nice for Mike's birthday. Meanwhile, Samuel and Carl compete for the same woman.

Bible Camp And A Chariot Of Love. Sheldon ends up in a fierce competition with Paige after their mums force them to attend Vacation Bible School. Georgie makes a questionable purchase.

A Musty Crypt. 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.

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

The Helium Insufficiency. A helium shortage leads Sheldon and Leonard to do business with a dealer in the black market to acquire some of the element for an experiment.

The Spock Resonance. Sheldon's interview for a 'Star Trek' documentary focusing on Spock turns up a shocking revelation about his breakup with Amy.

The Mystery Date Observation. When Leonard, Penny and Bernadette learn that Amy is going out on a dinner date, the trio set out to spy on her and the guy.

The Platonic Permutation. Sheldon and Amy spend Thanksgiving at the aquarium, Wolowitz volunteers at a soup kitchen, and Penny realises that Leonard knows a lot about her.

The Earworm Reverberation. God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation.

The Opening Night Excitation. Professor Proton visits Sheldon in a dream and gives him Obi-Wan-like advice about whether to go see the new Star Wars film or spend time with Amy.

The Sales Call Sublimation. Penny entices Leonard to meet with a psychiatrist, Stuart moves out of the Wolowitz house, and Howard and Bernadette find themselves at a loss.

The Empathy Optimization. Dealing with an under-the-weather Sheldon is draining for Penny, Leonard and the gang so they decide to treat themselves to a Sheldon-less weekend.

Please Let Him Propose To Me! Shocked by Andy's revelation about her daughter, Arrah's mum storms out. Sam discovers Ali is playing games, and Shorna forgets her vow of chastity.

It's Almost Game Over, Isn't It? Andy prepares to marry Arrah, but it's mixed emotions without loved ones by his side. Marco belatedly asks Sarah's dad for her hand in marriage.

Feels Like Ants Crawling On Me. Dr. Emma is shocked when 35-year-old Faizah's 'herbal' cream bought online leaves her skin red, raw, painfully inflamed, and itchy.

Raw Meat Mass. Margarita is a matriarch who has been hiding her armpit lump from her family. Bradley has a concerning growth that looks like raw meat on his leg.

The Never-Ending Keloids. Jeremy is a pastor with a hanging growth in an embarrassing location. Todd has a bump protruding from his forehead that is painful and humiliating.

Stephanie's Journey. With her weight spiralling, Stephanie needs her mum's help to care for her three kids. Now, she must lose weight if she's to see her kids grow up.

Randy's Favorite Celebrity Moments. From celebrity brides like Elle King to entourages featuring Kathy Griffin and Joan Rivers, Randy introduces his top star moments in the series!

7 People With 7 Opinions. Superfan TK brings 7 very feisty ladies with different opinions to help her choose the 'it' dress. Plus, actress Leslie has no budget for her perfect gown.

Teleshopping.

Teleshopping.

Party Planners. Molly and Peggy try to play nice for Mike's birthday. Meanwhile, Samuel and Carl compete for the same woman.

Mike Can't Read. Deciding to pursue new hobbies before becoming parents, Molly encourages Mike to take up roller-skating with her.

Molly's Out Of Town. Mike goes on a junk food binge to cope with missing Molly, while she's away. Meanwhile, Carl contemplates leaving Chicago.

Bible Camp And A Chariot Of Love. Sheldon ends up in a fierce competition with Paige after their mums force them to attend Vacation Bible School. Georgie makes a questionable purchase.

A Musty Crypt. 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.

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

The Helium Insufficiency. A helium shortage leads Sheldon and Leonard to do business with a dealer in the black market to acquire some of the element for an experiment.

The Spock Resonance. Sheldon's interview for a 'Star Trek' documentary focusing on Spock turns up a shocking revelation about his breakup with Amy.

The Mystery Date Observation. When Leonard, Penny and Bernadette learn that Amy is going out on a dinner date, the trio set out to spy on her and the guy.

The Platonic Permutation. Sheldon and Amy spend Thanksgiving at the aquarium, Wolowitz volunteers at a soup kitchen, and Penny realises that Leonard knows a lot about her.

The Earworm Reverberation. God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation.

The Opening Night Excitation. Professor Proton visits Sheldon in a dream and gives him Obi-Wan-like advice about whether to go see the new Star Wars film or spend time with Amy.

The Sales Call Sublimation. Penny entices Leonard to meet with a psychiatrist, Stuart moves out of the Wolowitz house, and Howard and Bernadette find themselves at a loss.

The Empathy Optimization. Dealing with an under-the-weather Sheldon is draining for Penny, Leonard and the gang so they decide to treat themselves to a Sheldon-less weekend.

School Recital. Molly is so focused on her job that she doesn't notice a fellow teacher hitting on her. Vince talks Mike into his latest money-making scheme.

Windy City. Mike and Carl get stuck working at the Renaissance Faire after their boss, Captain Murphy, gets dumped by Mike's mother.

Molly Unleashed. Molly finds herself at a crossroads with her career and makes a huge decision to leave her teaching job to become a writer.

A Philosophy Class. 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.

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

Crappy Frozen Ice Cream. 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.

The Meemaw Materialization. Sheldon's Meemaw visits and there's friction between her and Amy, which intensifies after the elderly woman blurts out a secret about Sheldon.

The Valentino Submergence. Sheldon and Amy celebrate Valentine's Day, Leonard and Penny feel the pangs of aging, and Howard and Bernadette find a surprise in their hot tub.

The Positive Negative Reaction. The gang learns Bernadette is pregnant and celebrates with karaoke. Meanwhile, Howard freaks out, convinced he must make more money for the baby.

The Celebration Experimentation. Sheldon and the gang celebrate his birthday and he's surprised by a special guest.

The Application Deterioration. Howard reconsiders entering into a legal partnership with Leonard and Sheldon, and the women offer Raj dating advice.

The Solder Excursion Diversion. Sheldon shocks Amy with a startling revelation after she buys him a laptop. Raj throws Leonard and Howard under the bus when they lie to their wives.

The Big Bear Precipitation. Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Raj goes all out with pregnancy gifts.

The Viewing Party Combustion. During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

Nearest Exit May Be Behind You. At Sheena's urging, Forrest agrees to go behind Molly's back, and Laura's confidence wavers when Birkan sees her body for the first time.

An Old Mustang. Georgie worries that he's leaving Connor out of his new project with Jim. Meanwhile, Mandy and Audrey struggle to decorate CeeCee's nursery.

Diet Crap. Tensions rise when Georgie intrudes on Mandy's new sales gig. Meanwhile, Audrey's conflicted when Jim makes it a point not to coddle Connor.

Cyst Pits. Drag queen Tameru is covered in tiny clusters of cysts on his chest, arms and neck. He discovered his bumps over a decade ago and still doesn't know what they are.

Hard Knot Life. Jason lost confidence and motivation due to the large growth on his neck. Shawnell has multiple mystery bumps on her head that have destroyed her self-esteem.

Chris P's Journey. Chris fears he is failing his daughter as his weight gain begins to limit his mobility. Chris turns to his estranged mother to help get his life on track.

Hell Yes To The Dress. The sister of NBA star Stephen Curry hunts for her dream wedding dress. Plus, Cami Lee returns with her over-the-top mum in search of the perfect black dress.

Don't Show The Goodies. Stephanie has a big budget and wants a show-stopper dress for her second marriage. Courtney Burson returns but has she finally made up her mind about a dress?

Teleshopping.

Teleshopping.

Pasadena. Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

An Academic Crime. Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

A Couple Bruised Ribs. When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

A House For Sale. When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

A Baby Tooth. Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

A Secret Letter. Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

An Old Mustang. Georgie worries that he's leaving Connor out of his new project with Jim. Meanwhile, Mandy and Audrey struggle to decorate CeeCee's nursery.

Diet Crap. Tensions rise when Georgie intrudes on Mandy's new sales gig. Meanwhile, Audrey's conflicted when Jim makes it a point not to coddle Connor.

The Expedition Approximation. Sheldon and Raj go on an expedition that turns into a test of how long before they get under each other's skin. Leonard and Penny argue about money.

Misinterpretation Agitation. Penny's sales pitch leaves a doctor-client smitten and the guys help her deal with it, and Bernadette and Amy debate female scientists and sexuality.

The Prom Equivalency. Amy and Bernadette organise a prom to be held atop the guys' apartment complex, but Sheldon is leery of all the prom pomp, circumstance and romancing.

The Septum Deviation. Leonard needs surgery for a deviated septum, and Sheldon feels an operation is too dangerous and that his roommate may not make it out alive.

The Champagne Reflection. Sheldon bids farewell to his Fun With Flags podcast. Leonard, Howard and Raj probe a late professor's research in search of some hidden significance.

The Clean Room Infiltration. Amy plans a Victorian dinner for Christmas Eve, while Raj, Leonard and Howard try to remove a pigeon that flew into the clean room at the university.

The Space Probe Disintegration. Raj awaits data from a space probe in which he was involved. Later, Leonard and Sheldon go dress shopping with Penny and Amy.

The Anxiety Optimization. Sheldon becomes concerned that his cushy lifestyle is impacting his professional progress, so he asks the gang to make life more difficult for him.

The Troll Manifestation. An online troll rips Leonard and Sheldon's physics paper, and a girls' night out leads to Penny, Amy and Bernadette dishing about embarrassing events.

Comic Book Store Regeneration. Howard gets unsettling news amidst the excitement of the comic book store reopening, and Penny doesn't practice what she preaches.

The Intimacy Acceleration. An experiment designed to make people fall in love piques Penny and Leonard's interest. Meanwhile, Leonard, Amy, Raj and Emily encounter a 'zombie.'.

The Colonization Application. There's trouble in paradise when Amy learns Sheldon signed up for a one-way mission to colonise Mars. Leonard makes an 'adult' purchase for Penny.

The Leftover Thermalization. An electrical short thaws the last meal cooked by Mrs. Wolowitz, and Sheldon and Leonard's work is featured in a magazine, but only one gets credit.

The Skywalker Incursion. Leonard and Sheldon consider dropping by George Lucas' Skywalker Ranch when a speaking engagement puts them nearby.

Fortification Implementation. Sheldon and Amy reach a crossroad, a man claiming to be Wolowitz's half-brother shows up, and Penny and Leonard argue live on Wil Wheaton's podcast.

Communication Deterioration. NASA asks Raj to craft a message for aliens in the event of contact, and Penny must choose between an audition or her job in pharmaceutical sales.

The Graduation Transmission. Wolowitz and Sheldon can't get a drone to fly, Leonard nearly misses giving a commencement address, and Raj pits his parents against each other.

The Maternal Combustion. Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion.

The Commitment Determination. Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

The Matrimonial Momentum. Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a time out.

After two top figure skaters' glittering rivalry gets them banned from the sport, they're forced to team up as a pair to get back into competition.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Lou Sanders, Ed Byrne and Milton Jones.

Graduation. After graduating high school, Sheldon has a breakdown when he realises he may not be ready for college. Also, Dale tries to make amends with Meemaw.

A Docent, A Little Lady. While Sheldon volunteers at a local train museum, Missy embarks on a new stage of womanhood, and Georgie discovers his mother's guilty pleasure.

Ear's In Trouble! Roger has a considerable growth on his shoulder that he calls his 'second head.' Jenna is a bubbly teenager with an even bigger bubble behind her ear.

Patrick's Journey. Patrick's so big that it's getting in the way of his relationship with his daughter. If he wants to see her graduate high school, he'll have to reverse course.

A Purple Unicorn. Former bass player for Prince, Nik, needs a one-of-a-kind dress for her aerial wedding. Teddi's wedding is only a few months away. Will the dress be ready in time?

Morticia Addams In A Good Way. Hayley Paige helps a bride wanting to look like a creepy fairy. Plus, a bride with a penchant for pickiness admits to already trying over 150 dresses.

Teleshopping.

Teleshopping.

Training Wheels. Sheldon is determined to ride his bike without training wheels and has Missy teach him. Mary and George argue over parenting styles.

Bible Camp And A Chariot Of Love. Sheldon ends up in a fierce competition with Paige after their mums force them to attend Vacation Bible School. Georgie makes a questionable purchase.

A Musty Crypt. 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.

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

A Philosophy Class. 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.

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

The Separation Oscillation. To ease Penny's mind, Leonard pays a visit to the woman he kissed during his expedition to the North Sea. Sheldon's breakup leads him to retaliate.

The Bachelor Party Corrosion. The guys surprise Leonard with a belated bachelor-party weekend in Mexico, but their plans hit a bump in the road when they get a flat tire.

The 2003 Approximation. Sheldon reverts to 2003 when he learns that Leonard and Penny are moving in together, while Howard and Raj form a band to play at the comic store.

The Perspiration Implementation. When Barry Kripke gives the guys fencing lessons, he makes a point of letting Sheldon know he's interested in dating Amy.

The Helium Insufficiency. A helium shortage leads Sheldon and Leonard to do business with a dealer in the black market to acquire some of the element for an experiment.

The Spock Resonance. Sheldon's interview for a 'Star Trek' documentary focusing on Spock turns up a shocking revelation about his breakup with Amy.

The Mystery Date Observation. When Leonard, Penny and Bernadette learn that Amy is going out on a dinner date, the trio set out to spy on her and the guy.

The Platonic Permutation. Sheldon and Amy spend Thanksgiving at the aquarium, Wolowitz volunteers at a soup kitchen, and Penny realises that Leonard knows a lot about her.

The Earworm Reverberation. God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation.

The Opening Night Excitation. Professor Proton visits Sheldon in a dream and gives him Obi-Wan-like advice about whether to go see the new Star Wars film or spend time with Amy.

The Sales Call Sublimation. Penny entices Leonard to meet with a psychiatrist, Stuart moves out of the Wolowitz house, and Howard and Bernadette find themselves at a loss.

The Empathy Optimization. Dealing with an under-the-weather Sheldon is draining for Penny, Leonard and the gang so they decide to treat themselves to a Sheldon-less weekend.

The Meemaw Materialization. Sheldon's Meemaw visits and there's friction between her and Amy, which intensifies after the elderly woman blurts out a secret about Sheldon.

The Valentino Submergence. Sheldon and Amy celebrate Valentine's Day, Leonard and Penny feel the pangs of aging, and Howard and Bernadette find a surprise in their hot tub.

The Positive Negative Reaction. The gang learns Bernadette is pregnant and celebrates with karaoke. Meanwhile, Howard freaks out, convinced he must make more money for the baby.

The Celebration Experimentation. Sheldon and the gang celebrate his birthday and he's surprised by a special guest.

The Application Deterioration. Howard reconsiders entering into a legal partnership with Leonard and Sheldon, and the women offer Raj dating advice.

The Solder Excursion Diversion. Sheldon shocks Amy with a startling revelation after she buys him a laptop. Raj throws Leonard and Howard under the bus when they lie to their wives.

The Big Bear Precipitation. Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Raj goes all out with pregnancy gifts.

The Viewing Party Combustion. During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

A Tire Convention. Georgie discovers that Jim's annual tire convention trip isn't what he says it is. Meanwhile, Mandy has doubts about the strength of her marriage.

A House Divided. Audrey and Mary go to war over CeeCee and Georgie, and Mandy can't help but take sides.

Dara Ó Briain hosts topical chat and hilarious games with guests Rhys James, Hugh Dennis, Katherine Ryan, Sara Pascoe, Glenn Moore and Sarah Keyworth.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Lou Sanders, Ed Byrne and Milton Jones.