I thought Rosemary's Baby was pretty scary....

Wicker Man & Bride of Frankenstein both are remarkable & deserve to rank at any place on Top 10 all time greatest horror films list. But when it comes to the Scariness factor only, then I think The Exorcist, The Thing or The Evil Dead are more potential candidates than those two.

Moreover, Asian shocker like Ju-On, Shutter and A Tale of 2 Sisters has also the elements in fine proportion that can be consider for this kinda list.

Here are some of my scariest horror scenes!

Chapter 2 coming soon

http://www.youtube.com/watch?v=luHmImbDSv4

TCM baby - deeply disturbing film even today and after hundreds of viewings

Ditto. I still want to walk away from the movie the first time Leatherface strikes, and then just slams the door behind him.

awesome scene - i took a class on horror films and the prof introduced the course with that scene and then shows us the 'reveal' scene in the original phantom of the opera and said 'this is horror' - it really made the point. we dont' want to see (behind the mask or behind the door) but we really do want to see (like looking with your fingers over your eyes).