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Ed Gamble hosts as captains Richard Ayoade, Joanne McNally and teams defend unacceptable views: Rhys James argues to ban retirement before 90.

Dara Ó Briain introduces topical chat and hilarious games with two teams of top stand-up comedians as they look back over the week's news.

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.

Eric hopes Dr. Lee can remove the giant growth from his backside. Plus, Michael makes jokes, but he knows the bump on his head is anything but funny.

Robert has thousands of unique bumps on his arms that Dr. Lee has never seen. Stuart's cluster of back bumps disgusts his wife but thrills Dr. Lee.

Megan and Whitney hunt frocks for their Palm Springs ceremony. Sabrina seeks a gown for her Italian nuptials. Maryam's dress is blinged for her Vegas wedding.

At 700 pounds, Ontreon's faith in God kept him going, and he's training to become a minister. But if he can't believe in himself, he won't be able to stop eating.

Lori has kept a secret from her entourage and now it's time for the big reveal! Merchandise Director Dorothy tries on a wedding dress for the first time.

Sue tries to win a car while Mike and Rusty go on a road trip with Brick. Frankie must help Axl locate a missing desk or risk losing her $200 deposit.

The Hecks embark on a road trip to Disney World. Brick begs his parents to take a detour to North Carolina so he can meet his online girlfriend.

The Hecks arrive at Walt Disney World and try to stay positive when a series of misfortunes threaten to put a damper on their trip.

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

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.

Everything might change when Leonard offers Penny a spur of the moment invitation to a romantic dinner for two on the 100th episode of the series.

Leonard and Penny experiment with dating again by 'beta testing' their relationship. Raj develops a weird bond with his phone's virtual assistant.

Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Howard tries to pick his astronaut nickname.

When Sheldon is forced to take a vacation by the university, he goes to work with Amy in her neurobiology lab.

When a corner office at the university opens, Sheldon must compete for it with his office nemesis, Barry Kripke. Penny gets an unusual gift from Amy.

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.

Sue is ecstatic when she gets her braces removed. Axl beats Mike at basketball for the first time and Brick tries to find the perfect book bag.

Frankie and Mike scramble to afford sending Sue to a good college next year. Sue and Brad strive to do something different with the school play.

Sue finds herself becoming a bit twitchy and nervous when she begins to drink a lot of coffee. Axl panics when he needs to declare a college major.

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.

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.

Dara Ó Briain introduces topical chat and hilarious games with two teams of top stand-up comedians as they look back over the week's news.

A US Army colonel and a civilian woman supervising him must track down stolen Russian nuclear weapons before they're used by terrorists.