The one that scared me into immobility was The Blob. I was watching upstairs on the "bad" TV as downstairs my high-school aged sisters had a wild party and our parents, prudently, had left the premises, I must have been about 10, and I was fairly literally petrified... caught between 2 terrors, the Blob and the idea of running to my sisters and admit to being a scaredy-cat in front of all their friends...