SPOILERS: (That come off the top of my head)
4. Final Destination.... Bus scene
3. The Thing..... you all know what part that I am talking about!
2. Dead Birds.... I know I wasnt the only one who slow mo their DVD player at that part to see the ghost! Great part.
1. Bourne Identity.... Not a horror movie but made me flinch the most from what I remember. The Broken Glass scene. This part had everyone jumping and made me flinch big time because it was so unexpected and loud.

I can't believe Exorcist 3 - Hosiptal Scene wasn't mentioned. I dont want to ruin it for anyone but lets just say I didn't see it coming AT ALL

old school :

- ALIEN - the alien face hugger jumping out of the pod onto John Hurts face ... the enture theatre jumped 2 feet.

- THE CHANGELING - the light fixture falling straight down at the camera


i never jumped again .. at anything since those 2 until :

- The Grudge. despite having seen the Japanese origional, i still jumped at the closet scene.

i for got those !

in the hospital, and again back home ..

great examples of how an effective scene is built..

People knock the grudge all the time. My girlfriend said she didn't even find it scary. But in terms of actually being scared, The Grudge, 6th Sense, and Stir Or Echoes had me jumping left and right. The Grudge had alot of crazy jump scenes.

Ghostbusters. The librarian turning into a ghoul. No longer would I jump at scary moments after watching that film.

IMHO, Thats one of the best scenes in film history. Its total atmosphere:D

I've not read the whole thread so I don't know if anyone's mentioed The Woman in Black: if you've seen the film, you'll know it. If not, I won't spoil it. Not just a jump though; pure spine-crawling terror.

It takes a lot to scare me. I've seen most things. That though was like a waking nightmare and I've not seen anything that comes close.

Best Jump Out sequence
 

This is sort of like a jump scene.When me and my friends were watching pet sematary and friggin racheals dead sister looks like friggin creepy and stuff and we were'nt looking and my dad came downstairs and sat next to us and we couldnt see i almosted peed myself.

The first meeting with the wolf in Narnia. :eek:

Exorcist - can't remember what part exactly, but me and my chick went to the directors cut thingy...and there was a "tense" kinda scene, and then the phone rang.
The fucking phone...

The only other one I can think of right now is in resident evil apocalypse, when the skeleton model falls out towards Mike Epps...gives you a slight jump, and then he mouths off at it, something like "I see you mother...." and on the word fucker, the zombie behind the skeleton jumps out.

Best Jump Out sequence
 

I remeber seeing the original Texas chainsaw massacre and when sally has franklin and there walking and leatherface jumps out to saw Franklin scared me pretty bad.

The very end of The Marked Ones when demon Jesse popped out of the closet really got me.