Creature Feature (especially creature from the black lagoon), and I had some pretty damn scary comic books when I was a kid. Tales from the Crypt, Weird War Tales, etc...

The first time I watched The Exorcist I was at home alone in a house way out in the woods, and during the movie we had an Earthquake! A real one! I almost lost my mind when that happened, thought my house was possessed. I still watch it from time to time now and laugh...

I'm with PF on Thriller...MJ scares the hell out of me still.

__________________
"Old man, how is it that you can hear these things?

Young man, how is it that you do not?"