http://www.youtube.com/watch?v=XsKaYtrOhDo
It really starts to look like him at 1:20, then only gets better 8)
That was pretty darn good!
Pretty well done there!
OMG even BETTER:
The Big Lebowski -- mutliple characters! (http://www.youtube.com/watch?v=zcv6fPszAZY) (Donny is first, and amazingly pretty close... he doesn't say much in the video though ;) )