David Walliams raises money for Comic Relief by appearing in a 24-hour marathon of various popular panel shows, comprising Would I Lie to You?, 8 Out of 10 Cats, Just a Minute, It's Only TV... But I Like It, Bruce Forsyth and the Generation Game, Through the Keyhole, Blankety Blank, Mock the Week, Celebrity Juice, Argumental, QI, They Think It's All Over, Call My Bluff, Give Us a Clue, What's My Line, Mastermind, Have I Got News for You, Whose Line Is It Anyway? and Never Mind the Buzzcocks.