The Conjuring

One look at that doll and I'm out. 

Patrick Wilson and Vera Farmiga play paranormal investigators Ed and Lorraine Warren who try to cleanse a haunted farmhouse.

This is a movie that succeeds based on simplicity.  It's the classic haunted house story, and nothing more.  They don't try to put any kind of new spin on the ghosts or make them sympathetic.  They're evil spirits and they need to be exorcised. 

The movie starts with an opening scene scarier than some entire movies, and it doesn't let up from there.

My only complaint about the movie is one scene where the dialogue seemed forced.  Other than that it's a great film.