8 Out of 10 Cats Does Countdown - Season 22 Episode 4 Lee Mack, Joe Wilkinson, Jon Richardson, Jessica Knappett
Jimmy Carr hosts as Lee Mack and Joe Wilkinson take on Jon Richardson and Jessica Knappett. Comedian Nigel Ng is in Dictionary Corner. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate
- Genre: Comedy, Reality, Talk
- Studio: Channel 4
- Keyword: letter, game show, mathematics, celebrity, puzzle, spoof, numbers, panel show, mash up, celebrity panel, celebrity game
- Cast: Jimmy Carr, Jon Richardson, Rachel Riley, Susie Dent, Robert Deaton