My Favorite Horror Movies - #6
Not much to say about this one other than the obvious. Either you find Regan's possession scary or you don't. And if you do, like me, you probably think this is one of the scariest movies ever. There's a good reason so many "The Possession of..." knockoff movies are made. Because this was so damn memorable and effective that for almost 50 years people have tried and failed to do it again. That's some staying power.