In no paticular order:

1. Pearl Jam
2. Taproot
3. Silverchair
4. Alice in Chains
5. The Butterfly Effect
6. Metallica
7. Pantera
8. Korn
9. Lacuna Coil
10. Slayer
11. Machinehead

Then there's some lesser bands, like Disturbed, System of a Down, Sepultura, Megadeth, etc.