Of all of the bands out there, my favorites are as shown:

Rage Against The Machine

System of a Down

Nine Inch Nails

Johnny Cash

Slipknot

Chevelle

Nonpoint

Skindred

Jimi Hendrix

Korn

Staind

Tool

Pink Floyd

Audioslave

And a little bit of Marilyn Manson

That's all I can think of right now. If you have any, please comment.