E4 +1 Thursday

Everyone gathers for Penny and Leonard's second wedding ceremony - the morning after Leonard's father and Sheldon's mother spent the night together

Penny accidentally reveals the secret that Bernadette is pregnant to their work colleagues, and Howard has a meeting with a representative from the US air force

A snowstorm leaves the children trapped inside Springfield Elementary, forcing Homer and Ned Flanders to mount a rescue operation

Department store Santa Gil grants Lisa's Christmas wish, but loses his job as a result. Feeling guilty, the family offers him a bed for the night - but he promptly moves in

Amy struggles to answer Sheldon's marriage proposal. Howard and Bernadette receive unexpected news. Stephen Hawking and Laurie Metcalf guest star

Leonard gives an embarrassing radio interview that angers the university. Amy and Bernadette bond over having to hide their success from Sheldon and Howard

Sheldon and Amy struggle to pick a wedding date and venue. Stuart and Raj fight over which one of them should take Bernadette's new colleague out on a date

Leonard is devastated when his mother befriends Penny. Howard and Sheldon bond when they drive into the desert to shoot off a model rocket. Christine Baranski guest stars

Sheldon, Bernadette and Raj are jealous when Amy and Howard work in the lab together. Penny and Leonard use a parenting book to control Sheldon's behaviour

Sheldon and Wil Wheaton go head to head for the role of the new Professor Proton. Penny takes care of Halley when Bernadette and Howard are on bed rest

Bert teaches Sheldon a lesson after he insults his work. Penny and Bernadette coach Raj on how to navigate his fledgling relationship with Ruchi

Leonard and Howard are furious to learn that Sheldon went to work with the military behind their backs. Bernadette suspects Ruchi is trying to steal her job

The guys find a laptop that has some virtual currency on it. The only snag is, the computer belongs to Penny's ex-boyfriend Zack

Sheldon and Amy try to eliminate the stress from their wedding planning by applying mathematics to the process. Raj realises best friend Howard is actually hurting his confidence

Sheldon and Howard plan respective birthday celebrations for Amy and Halley. A letter from his brother makes Leonard feel anxious about his own lack of accomplishments

Sheldon and Amy subject their friends to a series of secret tests to find out who is most qualified to act as best man and maid of honour at their wedding

Amy and Leonard bond during a series of science experiments and Sheldon finds Penny to be a surprising source of scientific inspiration. Laurie Metcalf and Brian Posehn guest star

Raj finds himself in the middle of a domestic drama when his new girlfriend turns out to still be married. Sheldon rents his old room back to have a quiet place to work

Sheldon petitions Wil Wheaton to appear on the new Professor Proton show, but offers a guest spot to Amy instead. Penny thinks the protagonist in Leonard's novel is based on her

The friends try all sorts of tricks to help Bernadette go into labour, while Howard is not happy to discover she has already chosen the baby's name without his input

Leonard tries to secure the perfect wedding venue for Sheldon and Amy. Bernadette and Howard cannot decide who should stay at home with the children and who should go back to work

Leonard, Howard and Raj hear Penny is having a business meeting with Bill Gates, and try to orchestrate an audience with their tech hero. Sheldon thinks he is the victim of a prank

Leonard runs against Sheldon to be president of the tenants' association, while Bernadette encourages Howard and Raj to track down the owner of a drone they find in the back garden

Sheldon takes the guys to a cabin in the middle of nowhere to meet a reclusive scientist. Penny and Bernadette improvise Amy's bachelorette party. Peter MacNicol guest stars

Sheldon is not pleased by the newfound popularity of Stuart's comic-book shop. Raj attempts to take the credit for Penny's astronomical discovery

Sheldon goes to Las Vegas to make some money. Penny and Bernadette take Amy shopping for a wedding dress, but her terrible choice forces them to lie

Leonard accompanies Sheldon on a road trip to end a family feud and persuade his reluctant brother George to come to the wedding. Jerry O'Connell guest stars

Friends and family gather as Amy and Sheldon prepare to tie the knot - but it seems the couple's minds are elsewhere. Kathy Bates and Mark Hamill guest star

A young mermaid makes a deal with a sea witch to swap her beautiful voice for human legs so she can impress a prince. Fantasy adventure, starring Halle Bailey

A father grows increasingly troubled by his 16-year-old son's contention that Father Christmas exists. Light-hearted drama, starring James Buckley and Lenny Rush

Fred Sirieix and his team of Cupids open the restaurant doors in the romantic city of Bath to singletons who are all hoping to find love at Christmastime

The gang goes on the infamous sociology and geography field trip to Swanage, and Will takes a shine to new girl Lauren - but she is only interested in Simon

Will is unhappy about being forced to take a work experience job at a garage due to a mix-up that sees Neil joining a newspaper. Simon Bird and Blake Harrison star

Will plans to celebrate his birthday with a grown-up dinner, but the event clashes with a more popular party - so the gang gatecrashes the rival gathering

Will tries to reinvent the boys' image by taking them clubbing around London, but his efforts to make the friends appear cool are hampered by aggressive bouncers and a tramp

Will helps co-ordinate the school's Duke of Edinburgh award scheme, and turns the situation to his advantage by trying to flirt with a university student. Simon Bird stars

The friends prepare for their exams. Simon makes progress with Carli by helping her revise, and the gang members get together to reminisce about the past year

Phil and Claire take Haley and Dylan to dinner to reassure them they are not bad parents. While out they run into Mitch and Cam, who are chaperoning Lily's first date

Claire struggles to find the right moment to sack an employee, and Phil catches Luke in a compromising position

All three families dealing with problems on their holidays, before trying to make their way back home in time for Father's Day

Marge tells Homer not to bother coming home after he gets a little too drunk at Moe's on Christmas Eve