I read on another forum - the PG-13 rating is kinda a turn-off. Not because of the content necessarily for me, but because you'll be finding lots of 12 year old teenieboppers in there with you in the movie.
I forgot to tell you Matt, I watched a program called "The Real Exorcists" on the A&E network and it showed seens from the movie. If you do have a chance watch the show (I am sure they will repeat it). It was very interesting.
Oh back on topic, I will wait until it comes out on DVD, that way I can scream in my own house