Elephant.
I realize it was an independent film made up of mostly non-actors, but I still expected much more from Gus Van Sant. I was able to overlook the poor acting because of what I said previously, but the movie itself is a direct result of some very lazy film making. They tried to make it too real, which makes it very boring. There are literally clips of that movie that are 10 minutes long in which absolutely nothing takes place; It is simply a camera shot following someone around as they walk the halls of the school. So...couple a very weakly supported plot line along with bad acting, and some gunshots in the last 10 minutes of the movie and you have Elephant. Very disappointed with that one.