Since its earliest days, television has looked to radio comedy for the 'next big thing'. Radio hits from Hancock's Half-Hour to Little Britain have become TV classics. But other long-running radio favourites have died a death on the screen. So what makes for a sure-fire transfer? Time Shift investigates, with the help of favourite clips from the archive and insights offered by Jon Culshaw, Clive Anderson, Barry Cryer, Marcus Brigstocke, and Mitchell and Webb. Show less