Nobody has said Phantasm yet (I don't think, anyway) Just when you KNOW the main character is safe, the Tall Man jumps out and scares the CRAP outta ya!
I once had a job reading electric meters and ended up in a mauseleum once... If I would have heard ANYTHING like a high-pitched whine of a silver sphere flying though the air, they would have been about to follow the yellow trail all the way to my house!

I didn't know *what* the building was before I went in, but since it was right next to a cematary, I should have guessed. Heavy, HUGE bronze doors. Walked down some stairs and saw a vacuum cleaner plugged in, but not running. No one in sight. Then I saw the plaques on the walls and I knew... I almost left, but since we got a bonus for each meter red over a set amount, I had to try. Look all over and didn't see anyone (Tall Man had already grabbed the vacuum person!) Found a office/closet area with a fabic curtain hanging in the back... Which lead to the basement... Yes, I went down the stairs to the basement of a mauseleum. If ANY of the machines down there would have kicked on while I was there, yellow-trail time. Found the meters, HAD to be two!
I don't think I took a breath until I was safely outside, back in my truck!
Used to be scared of Godzilla when I was about 10 (didn't help that my mom knew it and would sneak out of the kitchen and grab me ever now and then.)
I used to be scared of the Bigfoot TV shows, more than movies. Kept the shade pulled all the time on my bedroom window, even though I was on the second floor.
Saw Friday 13th, part 3 (in 3d!) as a midnight movie... Stayed awake until the sun came up... just in case...
Books used to scare me more than movies. Finished Salem's Lot at 4:00 in the morning... I knew, KNEW there was a vampire standing next to the closet door. Finally passed out with the light next to my bed on (didn't DARE get out of bed to turn the big light on... He'd a got me!)
Rented 28 Days Later and it didn't scare me, but it did shock me a few times. LOVED Shaun of the Dead! Caught 13 Ghosts on Sci-Fi Sunday. Okay movie, but not scary. My son asked to watch it with me... After it was over, we had a talk about ghosts (he's 7). As I tucked him in, I told him he could come lay on our bedroom floor if he woke up scared. (he didn't)