James,
I believe the documentary is truly outstanding! I tend to like documentaries anyway and this one is getting really high marks from the critics. I like Joe Morgenstern who publishes his reviews in the Wall Street Journal on Fridays, and he gave it a very high recommendation. As it turned out we saw "highlights" of the movie the night I returned from Alaska on one of the network shows (I think it was 20/20) and that led to our going to the opening the next day (August 12th, my birthday).