I was watching a couple documentaries last night dealing with demonic possession of people. The one that was made famous by the movies was the possession of a boy who was exorcised by a priest eventually--however, the movie made him a girl and was obviously, The Exorcist. (I also own the book and it was very informative and interesting.)

I am not sure what to believe, it seems like part of the time it is a church trying to get recognition or the family of a disturbed individual. Part of me does believe that there might be evil entities trying to create situations for their own purposes....

What is your opinion?
Have you had any experience with this in yours or a friends life?