Wow, crazy! It's about an ex-cop turned journalist/writer who predicts the collapse of the world as we know it, primarily due to the inevitable peak oil which will occur in the future. It's received mostly positive reviews so far, and much of what he says is supported by real facts. Absolute must see.

Note: not a feel good movie, of course.
http://en.wikipedia.org/wiki/Collapse_%28film%29