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The Gorilla Experiment: Howard and Penny are both jealous when Bernadette becomes fascinated with Leonard's physics project. (S3 Ep10)

The Maternal Congruence: Leonard is horrified when his mother turns up unannounced for a Christmas visit, and then he finds out that Sheldon knew about her divorce before him. (S3 Ep11)

The Psychic Vortex: Sheldon and Raj go to a university party where Raj lusts after a girl called Abby. Leonard regrets telling Penny that he disapproves of her belief in psychics. (S3 Ep12)

Jimmy Carr hosts as team captains Sean Lock and Jon Richardson are joined by Jason Manford and Stephen Mangan. Tim Key and Joe Wilkinson assist Susie Dent and Rachel Riley. (S4 Ep4)

The second half of a two-part compilation of all the best bits from series 21, with Jimmy Carr, Rob Beckett, Aisling Bea, Katherine Ryan, Richard Osman, Sara Pascoe, Oti Mabuse and more.

Teleshopping

Teleshopping

Life Among the Gorillas: Marshall has a tough first day at Barney's office and feels like a square peg surrounded by colleagues with obnoxious outlooks on life. (S1 Ep17)

Nothing Good Happens After 2am: Ted gets into a state of confusion when both Victoria and Robin demand a share of his attention at the same time. (S1 Ep18)

Best Prom Ever: Marshall and Lily's dream wedding venue becomes free and they set a date for their nuptials. Lily, however, worries that she's not ready to get married. (S1 Ep20)

Milk: It's Ted's 28th birthday and he gets a call from the matchmaking service saying they've found his dream woman. Unconvinced, Ted realises that Robin is the one for him. (S1 Ep21)

Come On: Barney slaps Ted when he says he wants to pursue Robin. Later, in frustration at Robin's camping trip with Sandy, Ted performs a rain dance to keep her at home. (S1 Ep22)

Where Were We?: Ted's romantic luck is bolstered by his new relationship with Robin, who has yet to reveal her love of guns. Marshall is feeling down after his split from Lily. (S2 Ep1)

The Scorpion and the Toad: Marshall has a string of ill-fated nights out with Barney in a bid to meet new women. He eventually goes on a date, but bumps into Lily. (S2 Ep2)

In County Antrim, there's a Mexican fiesta, risky desserts and a vegetarian who doesn't like vegetables, as Rebecca and Gareth, Nel and Billy, and Mandy and Jim compete.

In London, Helen and David's Greek grub takes on Vicky and Geoff's Italian menu, and Sara and Thierry's 1980s night, in a week featuring controversial views and a battle of the cheesecakes.

In London, Elorm and Mimi prepare an Afro-fusion menu. Kiri and Dale serve up the unexpected. And Serge and Eleni's Greek-Cypriot night features their unique food Olympics.

Chiarella's: Gordon Ramsay visits South Philadelphia, where struggling family-run restaurant Chiarella's is pushing owners Tommy and Dina DeFino's marriage to the brink. (S5 Ep15)

Gordon Ramsay revisits three restaurants to find out if they've continued to follow his advice. How have Down City, Classic American and Davide fared in his absence? (S5 Ep16)

La Galleria 33 (Part 1/2): Gordon tries to help La Galleria 33, run by sisters Rita and Lisa, who blame the restaurant's failures on everything from tablecloths to the weather. (S6 Ep1)

La Galleria 33 (Part 2/2): The saga of Boston eatery La Galleria 33 comes to a dramatic conclusion as Gordon Ramsay gives restaurant owners and sisters Rita and Lisa an ultimatum. (S6 Ep2)

Mama Maria's: Gordon Ramsay visits Mama Maria's, a failing restaurant in Brooklyn, New York, where owner John is overwhelmed by running a business that's become stuck in the past. (S6 Ep3)

...Christmas Special: In the second episode, the challenge is to fill one of the presents under the Lego tree with an ultimate Lego set of the teams' own design. (S3 Ep2/2)

...Treat 2025: David James, Hannah Fry, Martin Lewis, Melanie Blatt and Sue Johnston pit their wits against the mighty Taskmaster, in the annual wrangle for Greg's golden eyebrows.

Father Ted and Father Dougal get lost in the lingerie section of a huge department store. Only Ted's quick thinking can avert a potential embarrassment for the Church.

Seasonal Beatings: It's Christmas Day and Mark has invited his parents over for lunch. He's planned everything, but Jeremy is over-excited, and Dobby and Super Hans show up. (S7 Ep5/6)

Jimmy Carr hosts a Christmas edition of the show. Featuring special guests Jack Dee, Lorraine Kelly, Josie Long and Christopher Biggins, led by captains Sean Lock and Jason Manford.

Jimmy Carr hosts as team captains Sean Lock and Jon Richardson are joined by Jason Manford and Stephen Mangan. Tim Key and Joe Wilkinson assist Susie Dent and Rachel Riley. (S4 Ep4)