8 Out of 10 Cats which claimed that "8 out of 10 cats prefer Whiskas". New and past episodes air across the Channel 4 network of channels, with past episodes also repeated on Dave. The show will also start to air on Comedy Central. The show is hosted by comedian Jimmy Carr and features two teams, consisting of a regular team captain and two celebrity guests each. Sean Lock appeared as the first team captain from series 1 to 18; he was replaced by Rob Beckett at the beginning of series 19. The opposing captain was originally Dave Spikey, who left after series 4 and
8 Out of 10 Cats Does Countdown and Jon Richardson as permanent team captains (various other personalities, such as Lee Mack, Sarah Millican, Bill Bailey and Claudia Winkleman, deputise when either captain is unavailable to film). Rachel Riley and Susie Dent take up their regular roles from "Countdown"; Joe Wilkinson appears in many earlier episodes as Rachel's assistant and has also stood in as a team captain. The formation of the crossover began as a series of specials, the first of which was conceived on 2 January 2012, when Channel 4 orchestrated a special "mash-up night", merging two shows to form a special edition of the pair,