I've always thought beatboxers (folks who use mouth noises to make music) were nifty, but none of them are all that musically impressive--they mostly do hip-hop or techno beats and leave it at that. Then there's Rahzel, who can sing while beatboxing, but freaky-cool as that is, he's still not making impressive music.
The other day, I saw
this video of a guy who goes by the name Kid Beyond, and it floored me.
His website has some sample tracks from his CD, which I will be buying promptly. Check this motherfucker out.