Plot: This series has seen high scores from a number of contestants including Chris Tarrant, Vernon Kay, Dermot O'Leary and America Ferrera, but which two famous brains have topped the celebrity scoreboard to go head-to-head with Paddy McGuinness and Chris to determine the champion of champions? The show's regulars are back for one last time - Stephen Fry describes works of high culture in a language that 'celebrities might understand.