In 2001, six celebrities entered the Big Brother house in honour of Comic Relief. It was eight days that had the nation hooked and helped raise millions of pounds.Twenty-two years on since the original broadcast, winner Jack Dee and fellow housemates Vanessa Feltz, Claire Sweeney, Keith Duffy and Anthea Turner take a look back at this extraordinary moment in television history. From dancing in underpants to Vanessa writing on the furniture and Jack Dee's great escape, revisit where celebrity reality TV was born.