What movie freaked you out soo bad that you couldn't sleep after watching it?

i have to admit when i first saw the exorcist(at age 12,) i seriously couldn't sleep for probably 48 hours afterward)

Battlefield Earth

LOL!

When I was a kid I had countless nightmares after watching The Gremlins!!!

There was this flick starring Jodie Foster called "The Little Girl Who Lived Down the Lane"... She lives by herself, and this scary lady visits her and falls down into the basement. When Jodie opens the door to see what happens to her, all you see is this luminescent, dead white face staring back at you. My sister and I freaked out, and I pictured that face for like 3 years of my youth. Looking back, it wasn't freakin' scary at all, but you never know what'll scare the crap out of a kid, I guess.

True. There was this scene in Pee Wee's Big Adventure, where an old (ghost) truck driver turns her head towards Pee wee and suddenly her face becomes all reptile/skeleton/zombie-like.
It freaked me out as a kid! Now I laugh everytime I see that scene, so funny.

Boat Trip scared me...couldnt believe someone actually made a movie that bad!!!