A light-hearted look at the history of quiz and game shows on British tv and their reflection of our ever-changing social and political times. What was the first quiz show on tv like? Why did "Mastermind" give way to "Who Wants to be a Millionare?" What was the appeal of "Countdown"? Includes comments from the shows' presenters, writers and producers.

• Carol Vorderman
• Barry Cryer
• Stephen Mangan