some bands that own...

parkway drive
dead man in reno
august burns red
a day to remember
through the eyes of the dead
arsonists get all the girls (grind band) if you like that i suggest genghis tron, tower of rome, daughters, as the sun sets..
born of osiris
dead and divine
holly springs disaster
dead to fall
emmure
from graves of valor
her candane
medea
oh, sleeper
rosesdead
secret handshake
fordirelifesake

that should get you started, at least the ones you haven't heard of... some are metal, some hardcore, some metalcore, some death metal.

Edit: let me know if you need more, or a site to download from I might have some invites to some torrent sites.. Love when other smokers listen to metal, I hate smoking with all my hippie wannabe friends that listen to phish and string cheese all day long..