Make Me a Heavy Metal Workout Playlist

Bring Back Glam! regular reader Kari and I were just talking about needing new workout playlists. I tend to mix genres for my workout music: an even dose of Metal, pop and hip hop. No matter what, the tune must have a driving beat.

So, what do you listen to when you sweat it out? I need an hour long playlist - at least 10 tunes. I'd love if you shared some of your favorite Metal workout tunes (and yes, non Metal also accepted)! Feel free to leave your list right in the comments section. This should create a lively debate.