Quote Originally Posted by S.P.Q.R.

Metal = Megadeth, Cannibal Corpse, Mayhem, Death, Gorgoroth, Pantera, Immolation.
Not a bad list. I would consider some of the best metal out there: Motorhead, Megadeth, Old Metallica, Sepultura, Slayer, Death, Arch Enemy, Dark Tranquillity, and Iron Maiden.