Cee Lo Green is a very busy man at the moment working on the promotional campaign for his new ripper of an album, The Lady Killer. We've already seen that Cee Lo can deliver the goods and perform live as we saw on Jools Holland last month. But once again he puts on a spectacle for the cameras on Letterman giving in awesome vocal rendition of his summer smash "Fuck You". If you haven't picked up the album yet head on over here to treat yourself to a copy of it's soulful goodness. Props to The Audio Perv for the vid.