The definition of horror is pretty broad. What causes us "horror" is actually a many splendored thing (laughs). It can be hard to make horror accessible, and that's what I think Silence of the Lambs did so brilliantly - it was an accessible horror story, the villain was a monster, and the protagonist was pure of heart and upstanding so it had all of these great iconographic elements of classic storytelling. It was perceived less as a horror movie than an effective thriller, but make no mistake, it was a horror movie and was sort of sneaky that way.