Paranormal Activity

had a couple creepy/scary moments, especially as I feel I can actually relate to a lot of Katie's anecdotes about the dark presence, paralysis, etc. but once it went down the road from scary haunting to possession, it lost me. It's no Blair Witch and would have been better served by sticking to one genre of horror from start to finish. An invisible monster killing them at the end would have done it so much better--like if it had ended on the scene with Katie being yanked from the bed and out the room with an ending of them screaming off camera and not returning.