Kill'em All, Ride the Lightning, Master of Puppets (in my opinion their best over all album). They had some good songs outside of those (fuel, others have been mentioned).

I heard St. Anger once, it was my friends cd, after about fifteen minutes I opened his car window and chucked it at a crowd of people (hoping it would kill them and there by save them from hearing it, ever) all it did was flop around and land in a gutter. It was so not metal...