What I learned is simple: I have absolutely no idea how drummers do it. Damn, that's hard. All of the instruments I know how to play only require two hands: saxophone, bass guitar, piano - they're all easy enough. Yeah, you can add a little bit of pedal action on the piano, but come on - that doesn't really require much thought. Drumming, though? Ouch. I just can't get my foot to do the bass drum in a different pattern than the snare, etc. - forget it.
This of course led me to download a certain Chris Cunningham video [requires Google Video Player]. I'll let that speak for itself.