For a movie called "The Happening" not much happens. M. Night Shyamalan effectively delivers the usual broody air of foreboding that has been a trademark of his hits ("The Sixth Sense" and "Signs") and misses ("Lady in the Water" and "Unbreakable"). And this fear-mongering story of an airborne toxin that causes victims to snuff themselves in nasty ways shoving hairpins into their throats, hurling themselves en masse off a high rise, the like induces plenty of seat-squirming. The shock value wears off quickly, though, and writer-director Shyamalan strands us (along with Mark Wahlberg and Zooey Deschanel) in an ultimately boring...