The Happening (2008). Starring Marky Mark (sans the Funky Bunch), Cholo from Land of the Dead and the real-life sister of the actress who plays Dr. Temperance Brennan on TV's "Bones."
About the best thing that I can say about this movie is that it exists. That, and – in only the most literal of technical terms – it does, in fact, qualify as an actual movie (but only just barely). Never before (nor probably will I since) have I seen a film that just shows up, fails to engage the audience on any level (unless boredom counts), and then just as quickly leaves the screen... and all completely without explanation!