A special celebrity Christmas edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of.

The show is presented by Alexander Armstrong and co-host Richard Osman, and it features Justin Hawkins and Dan Hawkins, Gareth Malone and Samantha Stevenson, Jimmy Osmond and Ben Haenow, as well as Mike Batt and Jona Lewie. There is also a festive performance by The Darkness at the end of the show.