Season 17

Team captain Sean Lock and Joe Wilkinson face team captain Jon Richardson and Harriet Kemsley. Prank comedian James Veitch joins Susie Dent in Dictionary Corner, Rachel Riley is at the Countdown board and Jimmy Carr hosts.

Team captain Sean Lock and US comedian Michelle Wolf face team captain Jon Richardson and Rob Beckett. Prop comedian Spencer Jones joins Susie Dent in Dictionary Corner, Rachel Riley is at the Countdown board and skipper Jimmy Carr hosts.

Team captain Sean Lock and David Mitchell face team captain Jon Richardson and Sara Pascoe. "Mum's the Word" comedy duo joins Susie Dent in Dictionary Corner, Rachel Riley is at the Countdown board and Jimmy Carr hosts.

Team captain Sean Lock and Joe Wilkinson face guest team captain Richard Ayoade and Aisling Bea. Tom Allen joins Susie Dent in Dictionary Corner, Rachel Riley is at the Countdown board and Jimmy Carr hosts. Sean brings some unusual balloons, Joe fails at math, Tom chastises children's art, Richard obsesses over the switcheroo comedy White Chicks (2004) [/title/tt0381707/], Rachel and Aisling pull a little switcheroo of their own, and Jimmy takes a dive.

Team captain Sean Lock, Claudia Winkleman and her kittens face team captain Jon Richardson and Henning Wehn. Nick Helm joins Susie Dent in Dictionary Corner, Rachel Riley is at the Countdown board and Jimmy Carr hosts.

Team captain Sean Lock, Johnny Vegas and Johnny's chocolate bust face guest team captain Alan Carr and Lou Sanders. The Brett Domino Trio join Susie Dent in Dictionary Corner, Rachel Riley is at the Countdown board and Jimmy Carr hosts.