I listen to pretty much everything now but when I was younger (~'92 to '97) I used to listen to nothing but heavy metal. Favourites at the time were White Zombie, Pantera, Sepultura, Megadeath, Metallica, Ozzy. I also listened to Manson but I'm not sure if you can call him metal...

White Zombie was by far my favourite. Even now Astro-Creep: 2000 is an amazing album. If you haven't listened to this album then you're really missing out. I have Rob Zombie's first solo album, Hellbilly Deluxe, but I was a little disappointed. Despite still being pretty good, I felt it didn't quite match up to Astro or La Sexorcisto.

EDIT: Rammstein's stuff is also pretty good, from what I've heard