Save your money and wait to rent it.  I had to go with Stephen since it was rated R.  I love sci fi movies but have seen better on the sci fi channel.  I do like how it was filmed documentary style.  Stephen loved it but that isn't saying much.  It was interesting enough but I felt like I wasted money and time.  The previews were better then the movie.  Does anyone know if I can purchase R rated tickets and let Stephen go in by himself?  I should of asked when I was there.