Anyone ever see that movie/documentary? I watched it today. Wow it's amazing. I think every filmmaker should see it. I know it plays semi-regularly on IFC or something. I checked Blockbuster and apparently they say it's not available for rent. That's a damn shame.
Anyway, if you can find a way, go watch it. And I urge you not to look up the plot or information on the movie online beforehand, because most of the info you'll find will give away the ending. AFTER the movie, however, you should look it up online, because then it answers all of your questions.
That probably sounds strange, but seriously... go watch it.