OK, I admit it, I sometimes get a bit obsessed with a film, and see it a dozen times. My excuse is that I may write a screenplay someday, so I have to study technique. Few films stand up to this kind of scrutiny, besides the awesome Passion of the Christ.
The Exorcism of Emily Rose, however, is so well-crafted that it bears repeat viewings. Based upon the true story of Annliese Michel, a college student in Germany in 1976, it's based upon the trial of an exorcist priest who failed to save Emily from death, or the devil. The film is centered on the trial, with flashbacks providing windows into the terrifying case of a pious young woman besieged by several demons. Even more unsettling is the fate that befalls those who defend Fr. Moore and the film builds slowly into a stunning climax.
The Exorcism of Emily Rose has none of the gore of The Exorcist, but just as much drama, and leaves you without a definite answer to whether the devil exists, something to ponder in the days which follow. Especially at 3AM.