“PARANORMAL ACTIVITY” (2007)

Whereas “The BlairWitch Project” built on a sense of dread not just by having the protagonists facing a supernatural threat, but also possible starvation and exposure, “Activity” thinks that a lamp moving slightly after 45 minutes of blandness is a payoff. A fright show without any frights; add to that main characters who make enough bad decisions to warrant them a top spot at the Darwin Awards, it continues to inexpli-