In the late-night world, 2010 will always be remembered as the year Conan handed The Tonight Show back to Jay Leno. Days before Team Coco was forced out by NBC, O'Brien landed a sweet parting shot regarding his show's doubtful future. Leno took another hit in the latest late-night war when he invited Jimmy Kimmel to come on his show after Kimmel's unforgiving impersonation of Leno a few days before. Big mistake. Over at The Late Show, David Letterman and Bill Murray paid tribute to Mayor Bloomberg's famous dumpster pools and Jimmy Fallon joined forces with Zach Galifianakis for the year's most absurdly funny late-night segment, on Late Night.