Recommended Listening (most have free mp3s)

In Flames http://www.inflames.com/
Neurosis http://www.neurosis.com/
Soilwork http://www.soilwork.org/
As I Lay Dying http://www.asilaydying.com/
Dragonforce http://www.dragonforce.com/
Fear Factory: http://www.fearfactory.com/
Black Dahlia Murder http://www.blackdahliamurder.org/

Guilty pleasure:

My Chemical Romance http://www.mychemicalromance.com/