Whats Your Favorite Band In Each Genera Of Metal?

I only like a few Metal bands that I like, I guess most of them fall under the Thrash catergory: Metallica, Megadeth, and Pantera. I don't know what catergories Buckethead goes in. Black Sabbath I guess is Clic Metal, along with Led Zeppelin (if you even consider them metal). I also like Guns N' Roses.