Great input... really enjoying reading your comments. I forgot about Marathon Man... that scene with Hoffman's character strapped in the chair was perhaps the squirmiest time I've ever spent in a theatre. I guess it's because I had a coupla trips to my great uncle's dentist office when I was little and he didn't use novocaine.
Saw an excellent show last night... actually a series of shows... on Bravo; The 100 Scariest Movie Moments. Very interesting with lots of cool older and several foreign films... with very entertaining and insightful comments by actors, directors, and critics on the movies... including some you wouldn't normally think of like Deliverance, Misery, and Willy Wonka (huh?)... their top three were...
3. Exorcist
2. Alien
1. Jaws
The whole list is here:
http://www.bravotv.com/The_100_Scariest_Movie_Moments/index.shtml