well the OP did not ask this question "What movie or movies is/are so scary you will not ever watch them?"
For me I cannot watch scary movies - when I was 10-13 yrs old I would go see: Don't Look in the Basement, Burnt Offerings, The Texas Chainsaw (original), The Living Dead and all other kind of scary movies. I would stay at home with all the lights on in one room near the front door and say, "I will neer watch another scary movie!!" Next week I would be right back watching another scary movie.
Since then I realized my limits (and only watch scary movies because my wife likes them):
Here are movies I will never watch:
- The Exorcist (seeing that girl waddle down those steps or vomit)
- Saw (I understand at the end the badguy just walks away; also these people want to get out so bad the tear through another person's guts to find a key?!)
- The Ring (I might try it to see how scary it is - if it is scary then I would turn it off)
It's all about the sound effects and placing the characters in a familiar setting (camp, home, etc) and making them stay in the situationn vs. get up and roll.
BTW, just hearing the "supposed" true story behind Blair Witch scared me... but I would watch it.
My wife was watching "Open Water" just yesterday (I was not sure what it was as I was doing other things). It was not scary to me but I did think, "Why doesn't the guy on the camera filming them help them ... Geez some people"