Sharon Osbourne is famous for her outrageous family, her Hollywood lifestyle and her acid-tongue and honest opinions - all of which make her the perfect roast victim. But can she handle being in the firing line for a change? A glittering array of roasters, including Jimmy Carr, Louis Walsh, Gok Wan, Alan Carr, Patrick Kielty and Keith Lemon, take their lives in their hands as they test the limits of the legendary Mrs Osbourne's temper