Alexander Armstrong and Richard Osman present a celebrity version of the general knowledge quiz in which contestants try to come up with the answers that nobody else could think of.
Matt Baker, Alex Jones, Ed Byrne, Lucy Porter, Craig Revel Horwood, Ann Widdecombe, John McCririck and Jenny McCririck
Stuart Baggs, Chris Hollins, Colin Jackson, Carol Kirkwood, Merily McGivern, Suzanne Packer, Joanna Riley, Lembit Öpik
Sarah Cawood, Charlotte Hawkins, Eamonn Holmes, Denise Lewis, Sam Nixon, Tom O'Connor, Mark Rhodes, Michael Underwood
Vanessa Feltz, Russell Kane, Dawn Porter, Ben Ofoedu, Susanna Reid, Charlie Stayt, Dick & Dom
