if you haven`t heard the insanity of hella yet, check them out.
zach hill seriously owns in the department of odd time signatures, the double stroke with one foot method, and just overall incredibly fast and spastic (yet structured) drumming.
they have two videos on their webpage.
www.hellaband.com

also other pwning drummers,
flo
dude from mars volta
art blakey.

alright i`m out.