Hardcore/ Heavy Metal Bands Worth Checking Out

Post more bands and I will add to the list!

Tool
Norma Jean
As I Lay Dying
As Cities Burn
Fear Before
In Flames
The Chariot
All That Remains
Dethklok
Metallica
Disturbed
Chevelle
August Burns Red
Protest The Hero
Saosin
Chiodos
Coheed and Cambria
Sevendust
Job For A Cowboy
Slipknot
Godsmack
Marilyn Manson
Mastadon
Thursday
Underøath
Atreyu
UNCROWNED
Trust Company
The Used
Pantera
Lamb of God
Bullet for My Valentine
Avenged Sevenfold
Black Light Burns
Alice in Chains

A Day To Remember. Check them out of you havent.
Oh, and The Human Abstract.