Joss Whedon

Best known as the creator of Buffy the Vampire Slayer, Joss Whedon is a Hollywood polymath: he counts screenwriter, comic-book writer, director and executive producer among his credits. (In addition to Buffy, he's also created the television series Angel, Firefly and Dollhouse.) As though that weren't enough, he's also written several musicals: the cult favorite "Once More, With Feeling" episode from Buffy's sixth season, a literal song-and-dance routine, and the low-budget online musical, Dr. Horrible's Sing-Along Blog, starring Buffy actors and inspired by Queen, Andrew Lloyd Webber and Danny Elfman.