The original Paranormal Activity scared me the very first time I watched it, but on repeat viewings it just doesn't do it for me anymore. Alien 3 was the first movie I saw of the series when I was eight and it left me with a fear of air ducts, which I still genuinely have today at thirty three. The Thing is the only horror movie that still scares me, particularly the scene where Bennings is still changing and the crew catch him. The sound it makes creeps me the f**k out