i was gonna make a thread on this last night. i couldnt figure it out either. looked like a bad snl skit. either way it sucked and was awkward. i hope him and letterman were kidding around.
i've heard he's doing some fake documentary about his switch from acting to music. If he isn't actually doing that, then he's just an idiot. But i've got a feeling he's up to something. It seems almost like he's forcing himself to act the way he is.
i watched it many times and also watched other footage of him recently and it's definitely for the documentary. it's so easy just to say oh it's drugs, but he's in a character. I'm very interested how this all pans out though.
the only reason I say its drugs is because he has trouble communicating. How he stumbles through words. But if it is for an up coming project he is ever more legit actor because that was pretty awesome.