Perhaps best known for his portrayal of the title character in Scrooge (A Christmas Carol) - a role many consider to be the definitive screen performance of the Dickens character - Alistair Sim was one of the top British stars of the 1950s. While he began his career on stage, the peak of his onscreen career was littered with memorable comical roles in films such as The Happiest Days Of Your Life, Laughter In Paradise, Alfred Hitchcock's Stage Fright and the farcical The Belles of St Trinian's. While he was also known for more serious roles and would eventually return to the stage for Shakespearean roles, Barry Cryer examines Sim's work as a comic actor and why he should be remembered as a comedy legend.