Season 4
Episode 1 - Sport Stars
A sporting celebrity special edition of the quiz, with Phil Tufnell and Martin Offiah.
Episode 2 - Doctor Who Special
A special Doctor Who edition of the quiz, with guests including Sylvester McCoy.
Episode 3 - Sitcom Special
Jean Boht, Craig Charles, Nick Conway, Jennifer Gibney, Jeffrey Holland, Danny John-Jules, Brendan O'Carroll, Su Pollard, Shen Xiaojing
Episode 4 - Radio Celebrities
Radio DJs and presenters including Scott Mills and Anneka Rice take part in the quiz.
Episode 5 - Top Chefs
Top chefs Rachel Allen, Jean Christophe Novelli, Paul Rankin and Rustie Lee take part.
Episode 6
Christopher Biggins, Natalie Cassidy, Ricky Groves, Tammy Jung, John Noakes, Jessica Pardoe, James Phelps, Oliver Phelps, Peter Purves, Janet Street-Porter