Victoria Coren hosts a special celebrity edition of the quiz where knowledge will only take you so far, and patience and lateral thinking are also vital. Two teams of clever celebrities prepare to lose their dignity in honour of Comic Relief, as the Neuromantics (Charlie Higson, Rufus Hound, and Baroness Susan Greenfield) take on the combined wits of the Muppets (David Mitchell, Rosie Boycott, and Bill Turnbull). So join Victoria if you want to know what connects £100,000, PG Wodehouse, deep reddish-purple and Jack Horner's thumb. (thetvdb.com)