The Exorcist (1973, William Friedkin) - 122 min.
Should I even write a review for this one? I mean, everybody knows what I'm going to say. The Exorcist is brilliant. It's not my favorite horror movie, but that doesn't alter the fact that it is pure brilliance. My favorite part of the film is whenever little Regan spews obscenities and inappropriateness. The only bad part of this film is that it made Linda Blair famous, causing her to appear in more movies.