The problem with the Happening is that there was no character development... at all. If you dont' have an action packed movie to grip the viewer, you have to have character and plot progression. Niether existed in this movie. It just started and the same thing took place throughout the entire movie. Fine... I can initially buy the concept of why it happened, but they didn't develop it, didn't explain it. Then suddenly you start thinking, "well wasn't that convenient" or "that just doesn't make sense." There was almost a sense of arrogance with that movie as if he thought he didn't need to do those fundamental things to create a good movie.
I was pissed, not because the movie sucked, but because we all missed out on what could have been a one of kind, unbelievably fatastic movie.