The British TV station Channel 4 recently did a 100 Greatest Scary Moments poll/clip compilation show. Top 10 are:
1. The Shining
2. The Exorcist
3. Jaws
4. Alien
5. Blair Witch Project
6. Ring (1998)
7. Halloween
8. The Texas Chainsaw Massacre
9. The Omen
10. Nightmare on Elm Street
you can get 11-100 here:
http://www.channel4.com/film/newsfea..._100-91_1.html