Try watching it for over an hour, its kinda like watching your friend play mortal kombat for an hour trying to do one move.
Nah man, THIS guy rocks! vvv
http://www.youtube.com/watch?v=S0PuIsK2ySk
Y'all remember Jonesy right?! Police Academy...yep...awesome guy
I don't think it's all that much skill. He's just made noises and edited them together in a pretty precise way. It was cool, but not real beatboxing..