17. Jimmy Kimmel
It's been a bang-up year for the eternal man-boy of late night comedy. Last April, he hosted the White House correspondents dinner, at which he called Kim Kardashian "the greatest threat to America" and got a high five from President Obama, and on January 8th, Jimmy Kimmel Live made the big move to the 11:35 time slot. Naturally, he's doing it with the same laidback arrogance that's been his calling card since his days on The Man Show; Kimmel recently called Jay Leno "a master chef who opened a Burger King" in a Rolling Stone cover story, and put his money where his mouth is by beating David Letterman in the ratings on the first night of his new time slot.