I think Halloween has the best theme ever, TCM has some of the best sound ques ever (hopefully you understand what I'm saying), and as a poster above said anything with Goblin. Suspiria and Dawn of the Dead are both top notch because of Goblin.

Best score has to be Jerry Goldsmith's 'The Omen' for me. It's a toss up between 'The Shining' and 'Suspiria' after that. I never liked anything else Goblin ever did (esp 'dawn of the Dead'), but the music fit that film so perfectly.
CK