Ahhh, yes, Murderdolls <-> SlipKnoT connection rings a bell now. I HAVE heard them before. You're right - not my cup of tea
Led Zeppelin, Deep Purple, (Do you like the Dire Straits at all? A bit softer classic-rock, but also that era), Steppenwolf, all good stuff, all good stuff. Pink Floyd's too psychedelic/spacy for my liking (except, of course 'Another Brick In The Wall'! Love singing that out loud in class. We don't need no education. *smiles*).
Oh, a fairly unknown band you might want to check out what I've been digging lately, is called "Spiritual Beggars". Good heavy metal that reminds of a souped-up Black Sabbath/Uriah Heep with some power metal influences. You might like.
While we're trading bandnames, ever heard of the Stone Temple Pilots? They've been doing some good stuff, too, lately. Nice 'grunge metal', if that's your thing. I like, every now and again.
Sildantar.