Contestants try to score as few points as possible by plumbing the depths of their knowledge.
Stephen Fry asks unanswerable questions about health and safety; with Ross Noble, David Mitchell, Jeremy Clarkson and Alan Davies.
Stephen Fry asks unanswerable questions about highs and lows; with Sandi Toksvig, Fred MacAulay, Rob Brydon and Alan Davies.
Stephen Fry asks unanswerable questions about horses and hunting; with Clare Balding, Dara O Briain, Jimmy Carr and Alan Davies.
Stephen Fry asks unanswerable questions about holidays; with Bill Bailey, Rich Hall, Rob Brydon and Alan Davies.
Jeremy Clarkson and Richard Hammond each choose their ideal modes of transport for an epic pilgrimage from Venice, Italy, to Pau in France.
I det första av två avsnitt tillbringar Louis tid med patienter som försöker komma till rätta med sina brott.
Stephen Fry conjures up some hocus-pocus in a special Christmas edition of the quiz, with Daniel Radcliffe, Lee Mack, Graham Norton and Alan Davies.
Stephen Fry asks unanswerable questions about hypnosis, hallucinations and hysteria; with Ronni Ancona, Phill Jupitus, Robert Webb and Alan Davies.
The guests joining Lee Mack and David Mitchell are Warwick Davis, Hugh Dennis, Katherine Ryan and John Simpson.
The guests joining Lee Mack and David Mitchell are Kevin Bishop, Brian Blessed, Josh Widdicombe and Professor Kate Williams.
Graham's guests include Oscar-winning Hollywood star Matthew McConaughey talking about his new crime drama `White Boy Rick', professional wrestler-turned-actor John Cena and Hailee Steinfeld starring together in new sci-fi action film `Bumblebee'. Also joining Graham is superstar chef Jamie Oliver presenting his latest book `Jamie Cooks Italy' along with music from Mark Ronson and Miley Cyrus, who perform the single `Nothing Breaks Like a Heart'.
Rob Brydon hosts a festive edition of the hit comedy panel show and as ever, David Mitchell and Lee Mack are the lightning-quick team captains. David is joined by Miranda Hart and Stephen Mangan and Lee is joined by Barry Cryer and Miles Jupp.
David Mitchell is joined by Tom Courtenay and Richard Osman, and Lee Mack is joined by Chris Kamara and Sara Pascoe.
Aisling Bea, Jessica Knappett and David O'Doherty face Rob Beckett, Richard Osman and Ellie Taylor to discuss the nation's most popular Brits. Jimmy Carr hosts.
Jimmy Carr hosts as Rob Beckett, Krishnan Guru-Murthy and comedian Phil Wang face Aisling Bea, Gabby Logan and new comedian Rosie Jones in the comedy panel show.
Graham's guests include Oscar-nominated actor and comedian Steve Carell, starring in new fantasy drama `Welcome to Marwen', national treasure Dawn French, making her panto debut in `Snow White at the London Palladium', `Black Panther' star Michael B Jordan, reprising his boxing role in `Creed 2', and star of `The Affair' and `Luther' Ruth Wilson, in new BBC drama `Mrs Wilson'. With music and chat from Cheryl, who performs her single `Love Made Me Do It'.
The guests joining Lee Mack and David Mitchell are Rhod Gilbert, Jamie Laing, Tracy-Ann Oberman and Claudia Winkleman.
The guests joining Lee Mack and David Mitchell are Clara Amfo, Tom Davis, Shaun Ryder and Henning Wehn.