This survey had a variety of answers and only a few films that got mentioned more than once.
The Winners are...
1. ET
2. The Exorcist TIED WITH Superman III (When the woman gets sucked into the super computer and is turned into a robot!)
3. The Birds, Poltergeist, Amityville Horror, The Dark Crystal, and The Neverending Story
Scary, but not scary enough:
Alien
All Dogs Go To Heaven
American Werewolf In London
Arachnephobia
Are You Afraid Of The Dark (TV)
Beastmaster (film, not TV show)
The Blob
Candy Man
The Changeling
Chucky
Creepshow
The Dead Zone (film)
Demon Seed
Dr. Who
The Fly (original and remake)
Ghostbusters
Ghost Story
Hocus Pocus
It
"Mop Mop" Aliens from Sesame Street
The Shining
Something Wicked This Way Comes
and...
The Wizard Of Oz
