Jimmy hosts the panel game, with Sean Lock and special guest captain Joe Wilkinson with celebrity guests Danny Dyer and Seann Walsh. Susie Dent is joined by Bill Bailey in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

8 Out of 10 Cats Does Countdown Season 8 Episodes...

• s08e01 - Bill Bailey, Sarah Millican, Rob Delaney, Nina Conti
• s08e02 - Kevin Bridges, Kathy Burke, Joe Lycett
• s08e03 - Rhod Gilbert, Sara Pascoe, Johnny Vegas
• s08e04 - Rob Beckett, Katherine Ryan, Greg Davies
• s08e05 - Miles Jupp, Greg Davies, Holly Walsh
• s08e06 - Vic Reeves, Lee Mack, Sara Pascoe, Alex Horne
• s08e07 - Bob Mortimer, Sarah Millican, Katherine Ryan, Alex Horne
• s08e08 - Roisin Conaty, Sarah Millican, Rhod Gilbert, David O'Doherty
• s08e09 - Seann Walsh, Joe Wilkinson, Danny Dyer, Bill Bailey
• s08e10 - Johnny Vegas, Sarah Millican, Rob Beckett, Vic Reeves
• s08e11 - Mel Giedroyc, Lee Mack, David O'Doherty, Adam Buxton
• s08e12 - Andrew Flintoff, Bill Bailey, Roisin Conaty, Rob Beckett
• s08e13 - Liza Tarbuck, Sarah Millican, Romesh Ranganathan, Phill Jupitus
• s08e14 - Bill Bailey, Joe Wilkinson, Isy Suttie, Joe Lycett
• s08e15 - Henning Wehn, Bill Bailey, Jessica Hynes, Tom Allen
• s08e16 - Sara Pascoe, Josh Widdicombe, Alex Horne
• s08e17 - Greg Davies, Holly Walsh, Vic Reeves

8 Out of 10 Cats Does Countdown Show Summary

In 2012, two of Channel 4's most popular quizzes - the topical hit 8 Out Of 10 Cats and the cerebral words-and-numbers game Countdown - came to metaphorical blows as the anarchic comedians of the former took on the brainbox format of the latter.

Jimmy Carr was the host, with Sean Lock and Jon Richardson as the contestants. Jimmy was helped by Countdown regulars Susie Dent and Rachel Riley, and hindered by Joe Wilkinson.

The gang returned to play Countdown a second time later in 2012.

In January 2013, as part of the next Channel 4 Mash Up, Jimmy Carr, Jon Richardson and Sean Lock hijacked an episode of Deal or No Deal. A number of comedians joined in, plus Rachel Riley and Susie Dent again. Joe Wilkinson acted as the Banker's assistant.

Since 2013, the show has run regularly with multiple-episode series.