Great Exorcism Scene
The movie is cliche as hell, uses every trick in the book that it almost felt like a homage, but still worth it if you dig these movies.
Also of note is the great use of surround sound(on the Blu Ray).
I would say the climactic excorcism scene is one of the best I've seen, certainly better then the one in The Conjuring and up there with The Exorcist.