A special celebrity Olympic golds edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Presented by Alexander Armstrong and co-host Richard Osman. Featuring Aled Davies and Tessa Sanderson, David Wilkie and Dame Mary Peters, Jason Gardener MBE and Marlon Devonish MBE, and Tanni Grey-Thompson and Sally Gunnell.