When I was a kid...
An American Werewolf in London. (Probably still my favorite horror/monster movie).
And:
Evilspeak
I haven't seen any of this movie since I was about 9 years old, so I can't tell you if it was scary or not, but satanic computers and maneating pigs were a bit too much for me as a kid.
I have that movie sitting on my desk at home, via netflix. I'm still trying to decide if it will be better to watch it, and see how it is, or just let it live on in my memory "as is"
-Sik