Stigmata
Whoooo, a real head trip here!
This scary movie is particularly effective at getting you thinking. It poses some pretty deep questions while effectively scaring the pants off of you. To say much more would be to give away significant plot points, but suffice to say, this is not your typical "God Vs The Devil" movie.
This is a great movie for a group of friends who like to talk about movies after they see it. This will entertain you while you are in the theater, but the chills may last a lot longer than that one evening, and it will provide fodder for interesting conversation with your friends (and your local priest) for a long time afterwards.
Rent it and watch with a group of your best friends. Then go to a coffee house and analyze the hell out of it.
