Eddie Cantor was one of the fearless founders of modern American entertainment. He ruled theatre, radio and film during the Roaring '20s and the Great Depression of the '30s before easing into television work after World War II. Though his singing style has gone the way of the giant river otter, his wild antics remain very influential -- even if today's comedy and rock stars don't know Eddie Cantor from Cantor's Deli. On the humanitarian front, Cantor co-founded the March of Dimes, which helped fund the fight against polio.