In his controversial masterpiece The Great Dictator, Charlie Chaplin offers both a cutting caricature of Adolf Hitler and a sly tweaking of his own comic persona. Chaplin, in his first pure talkie, brings his sublime physicality to two roles: the cruel yet clownish "Tomainian" dictator and the kindly Jewish barber who is mistaken for him. Featuring Jack Oakie and Paulette Goddard in stellar supporting turns, The Great Dictator, boldly going after...