Generally I can't suspend disbelief enough to be taken in by a horror movie. (Jason has a weedwacker- eek, eek, zzzz!) However, Silence of the Lambs scared the hell out of me. Most horror movies I can dismiss by saying that isn't real. SotL had me thinking "There are people out there like that. I need to buy more ammo."
My husband often called me sick because I liked Silence of the Lambs so much. I thought Hopkins was excellent as Lector. The psychological games his character played with Clarisse fascinated me.