Who: Whoopi Goldberg
Real name: Caryn Elaine Johnson
The actress and talk show host decided to go with the name Whoopi because of—wait for it—a whoopee cushion. She's stated that "if you get a little gassy, you've got to let it go. So people used to say to me, 'You're like a whoopee cushion.' And that's where the name came from." Um, ew. And as for Goldberg? It's been reported that her mom felt that Johnson wasn't "Jewish enough" to make it in showbiz. Odd, considering most actors with traditionally Jewish names change them to something more ethincally ambiguous.