Metal heads.

I was browsing through some threads and saw the favorite band one, so I had to make this. Who is your favorite/most influential metal band ever? And please, if you're just going to say "that stuff just sounds like static" or whatever, go make your own thread. I'll start with a few of mine, Meshuggah, Rage Against the Machine (not exactly deathmetal, but de la Roche is beast), the red chord, ass jack, and Dillinger. Anything with Mike Patton.
Edit: that's not even close to all, but it'll do for now.