47. Jimmy Fallon
Fallon is comedy's Nice-Guy-in-Chief, having effortlessly made the transition from SNL fixture to host of late night television's most amiable, most casually cool, talk show. He comes on like a goofball, but he's something of a closet hipster; music geeks around the world will eternally be in his debt for bringing the Roots to network TV. And speaking of music, Fallon has chops, and it's in musical parodies that he really shines: Slow-jamming the news, dueting with Bruce Springsteen, and teaming with Justin Timberlake for the already-legendary "History of Rap" medleys.