E4 +1 Tomorrow

The walls close in on Mercedes as she races to get the money for her blackmailer, and Dillon and Rex try to support Ste as he struggles with his emotions

Donny and Misbah's relationship is on the rocks, Frankie receives a threatening letter, and Mercedes wants to turn over a new leaf with her boyfriend Warren

Christmas festivities are in full swing in the village, as Warren and Mercedes look forward to the future and Frankie confides in Dodger

Comedy clips showcasing amusing internet videos featuring sports of the lawnmower, motorcycle and bicycle variety

Sheldon's epic railway journey ends in chaos, forcing Leonard and Amy to travel to Arizona to pick him up. Meanwhile, Penny has a job interview

Sheldon teaches a course at the university, and Howard surprises the gang when he chooses to enrol on it. Comedy, guest starring Regina King

Leonard and Penny attempt to prove Sheldon wrong when he claims that he and Amy have a superior relationship, and Howard is asked to throw the first pitch at a baseball game

The guys debate becoming part owners of the comic-book shop, while Raj's girlfriend Emily (Laura Spencer) learns about his past

The girls go on a weekend trip to Las Vegas, but accuse Penny of spoiling their fun when she is forced to revise for a work assessment. Comedy, starring Kaley Cuoco

Sheldon and Raj try to find out whether they could survive an expedition in a mine, while Leonard and Penny turn to Howard and Bernadette for advice when they argue about money

Penny lands herself in a difficult situation, while Amy and Bernadette discuss whether female scientists should use their sexuality to get ahead. Guest starring Billy Bob Thornton

The girls decide they want to re-enact their prom nights with their current partners, but Sheldon feels under pressure to take part in all the romantic traditions

Leonard announces he has to go into hospital for surgery, and the impending divorce of Raj's parents motivates Howard and Bernadette to work on their own marriage

Sheldon bids an emotional goodbye to Fun with Flags as he and Amy record the final instalment of the Internet show. Guest starring LeVar Burton

Amy hosts a traditional Victorian Christmas Eve dinner, Raj's father comes to visit, and the guys try to free a bird they accidentally let into the university clean room

Raj worries that a space probe he helped design will not function properly, while Leonard and Sheldon go shopping with Penny and Amy. Comedy, starring Kunal Nayyar

Sheldon becomes concerned that his lifestyle is stopping him from achieving scientific greatness, so he asks the gang to make life more difficult for him

Leonard and Sheldon defend themselves against criticism from an online bully, while the girls confront embarrassing moments from their pasts

Everyone prepares for the re-opening of the comic-book store, but Howard receives some shocking news. Penny is unable to follow her own advice

Sheldon and Penny agree to participate in an unusual experiment, while Howard and Bernadette run into trouble at the airport after returning from Mrs Wolowitz's funeral

Amy learns that Sheldon has applied for a one-way mission to colonise Mars, and Raj decides to snoop around Emily's flat. Comedy, starring Jim Parsons and Kaley Cuoco

Leonard is upset when a magazine fails to mention him in an article about the paper he co-wrote with Sheldon, and a power cut at Mrs Wolowitz's home leads to a dinner in her honour

When Leonard and Sheldon are invited to speak at UC Berkeley, they decide to take a detour and try to meet George Lucas. Comedy, starring Johnny Galecki

Howard finds out that he has a half-brother, Sheldon and Amy have a sleepover, and Penny gets an offer to audition for a film. American comedy, starring Johnny Galecki

Penny contemplates a return to acting, while Raj is asked to create a message on the off-chance a Nasa mission discovers alien life. Kaley Cuoco and Kunal Nayyar star

Howard questions his engineering abilities when he fails to get a toy drone to fly, while Raj pits his parents against each other when his father cuts him off financially

There is a clash of personalities when Sheldon and Leonard's mothers finally meet, while Howard finally decides to do his fair share of the housework

Sheldon presses Leonard and Penny to choose a date for their wedding, while he also has to deal with dramatic changes in his own relationship with Amy

Jack is suited and booted with a special mission to make Christmas day extra special. Nancy and Darren having put the year's pains behind them are hopeful

A corporation buys Springfield Elementary School and secretly uses the pupils as guinea pigs to test a new toy range. With the voices of Tim Robbins, Joe Mantegna and Gary Coleman

Fred Sirieix and his team pull out all the stops to find matches for jobbing Father Christmas Dan, recruitment consultant Macy and others also looking for companionship

The households' opinions on Celebrity Race Across the World, All's Fair, Squid Game: The Challenge, The 1% Club, Come Dine with Me: Teens and Police Interceptors

Shows including Little Fires Everywhere, The Titan Games, Casino Royale, World Cup Final '66, Naked Attraction and Bradley Walsh & Son: Breaking Dad are appraised

Famous faces critique programmes including Countdown, Sex in Lockdown: Keep Sh*gging and Carry On, Big Brother: Best Shows Ever, Scarface, Us, First Dates and BBC News

Anna Richardson meets 21-year-old YouTuber Jay, who cannot make connections in real life, and 28-year-old Victoria, who is looking for her very own Xena, Warrior Princess

A songwriter meets a wedding photographer, but flirtation turns to faux pas as the drinks flow, while a cheeky charmer tries to win over a high-society make-up artist

Shows including Little Fires Everywhere, The Titan Games, Casino Royale, World Cup Final '66, Naked Attraction and Bradley Walsh & Son: Breaking Dad are appraised

Famous faces critique programmes including Countdown, Sex in Lockdown: Keep Sh*gging and Carry On, Big Brother: Best Shows Ever, Scarface, Us, First Dates and BBC News

Claire's super-competence in business and home affairs might be the result of her use of a secret weapon, Meanwhile, Mitch and Cam are snubbed at a friend's wedding

Phil tries to hide the fact he has an attractive new client from Claire, while Jay becomes obsessed with tracking down a troll, and Mitch and Cam try to teach Lily to ride a bike

Sheldon's epic railway journey ends in chaos, forcing Leonard and Amy to travel to Arizona to pick him up. Meanwhile, Penny has a job interview