Quote from the dude who linked it:
OK, I checked out [REC] with my 7 year old daughter, in retrospect I should not have done that, but I didn't know what we were getting into. Now we are both up, nervous energy as she talks about -spoiler - near the end of the movie. We were chilling on the bed in the bedroom with the lights off, between things jumping out and her grabbing my neck at the same time, lol, we both enjoyed it. I think I'm more creeped out than she is. She just told me, "Don't worry dad, it's just fake." Time for some Family Guy on Hulu to clear my mind.