Maybe, if i was watching it at my house alone in the dark, I could enjoy this movie and convince myself to be scared. Overall the movie was slow while we waited to see the advertised "scary parts". There was more emphasis on comic relief than I needed but regardless, people laughed through the whole movie whether they were supposed to or not, so that hurt the film's intent. As for the ending, They could have gone further, bring on the demonologist!
Ultimately, the movie did not live up to it's HYPE of being "the scariest movie ever". If I had to describe this film as a weatherman, I would say that it was, mild with a chance of slight creepiness. See Fallen for a good demon possession movie.