ride the lightning is cool, personally i like kill em all much more. my favorite?? hmm... Judas Priest's album painkiller and Accept's album Metal Heart are in my ear at the moment.
For me ... god, I could list hundreds, but the bands I'm into most at the moment are Amon Amarth, Soilwork, Strapping Young Lad, Trivium, American Head Charge, Mnemic and most importantly, Dream Theater; a band anyone into Rock should look up, especially songs from their Train Of Thought album.