"Paranormal Activity" claims to be the next Blair Witch Project - watch the trailer and make up your own mind about this film that opens in selected theater September 25, 2009.
From their YouTube page:
"After a young, middle class couple moves into what seems like a typical suburban starter tract house, they become increasingly disturbed by a presence that may or may not be somehow demonic but is certainly most active in the middle of the night. Especially when they sleep. Or try to."
The film stars Katie Featherston, Micah Sloat, Mark Fredrichs, Amber Armstrong, and Ashley Palmer.