I've been rocking their last album Given To The Rising a lot. Amazing musicians.

Top five (pretty much unchanging and in no particular order)
Opeth
Hypocrisy
Emperor
Slayer
Lamb of God

After that pretty much all the Scandinavian melodeth bands (Amon Amarth near the top), Death, Arsis, Goatwhore and Fear Factory are pretty badass too.
Im pretty sure All shall perish is touring with LOG in the states for those who are into them. Im looking forward to LOG and COB myself.
Any horror/metal fans with updates and shit let me know. thanx.