Good picks, but you missed the best:
1. Slayer - Point (from "Diabolus in Musica") or anything else by Slayer. A fit of rage turned music.
2. Warren G & Nate Dog - Regulate ("Now they`re screamin` and yellin`, it`s a tad bit late - Nate Dog and Warren G had to regulate"

)
3. Metallica - Harvester of Sorrow ("Justice for all")
4. Napalm Death - Dementia Access ("Utopia Banished"). Man I love
Napalm Death 5. Rammstein - Feuer Frei ("Mutter")