|The Scariest Movie Of All Time|
One of my favorite scenes in any movie ever is the famous "spider-walk" scene from The Exorcist. This was not in the original release. Director Friedkin cut the very brief scene for technical reasons (you could see the wires holding up contortionist Linda R. Hager). It was restored for re-release with the help of cgi (author and screenwriter William Peter Blatty really wanted it in).
The physical transformation of Regan (Linda Blair) from a cute chubby-cheeked girl to a head-spinning projectile-puking monster was done very well. She changes slowly over the course of the movie, rather than all at once, so you were never prepared for whatever creepy terrors would come next...