Alexander Armstrong and co-host Richard Osman are joined by children's television stars for a special celebrity edition of the quiz that tests the depths of your general knowledge. These celebrities try to come up with the answers that no-one else could think of.Featuring Sarah Greene and Mike Smith from Saturday Superstore, Grange Hill's Erkan Mustafa and Lee MacDonald, The O-Zone's Jamie Theakston and Jayne Middlemiss, and Blue Peter presenters Peter Duncan and Mark Curry, with special guest Keith Chegwin.

Alexander Armstrong and co-host Richard Osman are joined by soap stars for a special celebrity edition of the quiz that tests the depths of your general knowledge. These celebrities try to come up with the answers that no-one else could think of.Featuring Laila Morse and Anna Karen, Verity Rushworth and Adele Silva, Sue Jenkins and Alex Fletcher and Wendi Peters and Rula Lenska.

Alexander Armstrong and co-host Richard Osman present a sporting celebrity special edition of the quiz that tests the depths of your general knowledge, as celebrities try to come up with the answers that no-oneelse could think of.Featuring Martin Offiah and Phil Tufnell, Mark Bright and Martin Peters, Samantha Murray and Pete Reed and John Parrott and Hazel Irvine.