Rage Against the Machine for sure. Their live albums are better than their studio ones. Soundgarden is too depressing, (Black Hole Sun was good though) and Audioslave sort of bores me.
Evanescence's Fallen album was very good, especially Going Under, Bring Me to Life, and My Immortal. I also listen to a Japanese punk band, shakalabbits (but that doesn't really matter on this board).