04 Halloween (1978)
Well, duh. Of course it would be on the list.
Although I will admit that I just saw it last year. I have this way of avoiding movies that I think will scare me. I am a big wuss. I still haven't seen The Exorcist. I only saw Silence of the Lambs almost a year after it opened because I kept having nightmares about it and figured, 'why the hell not? I'm already having nightmares' The nightmares stopped as soon as I saw it. It wasn't as scary as the nightmares. But Halloween is evil scary. I mean, it's even scary during the daylight hours. That is just... wrong.