Like an obsessed stalker, Keith Olbermann has declared he won’t stop talking about Rush Limbaugh, even though Rush has challenged MSNBC to do so for a month. Oh, and for good measure, the classy MSNBC host screamed at Rush—who was surely not watching—”F.U.!” Olbermann copped to his Rush fixation in response to the challenge to MSNBC that Limbaugh laid down on his show today not to mention him for a month–and see what happened to their ratings. View video here.