Of course with all that said....we can't forget Type O Negative....RIP Peter Steele......and wait, there's also Venom and King Diamond aka Mercyful Fate....the list goes on.....oh and IRON (FUCKING) MAIDEN !!!!...Lol
Nine Inch Nails (NEW ALBUM OUT THIS YEAR!)
Anthrax (with Joey Belladonna on vocals)
Testament (only when Alex Skolnick is playing guitar with them)
Metallica (pre-Black album...sorry, I am one of those Metallica fans)
Slayer
And I also agree with a lot of what has already been said (Led Zep, Ozzy, etc)