The film is a beautiful, intelligent examination of China's Three Gorges Dam project. I know, it sounds boring, but it's amazing. It was recently released on DVD
Also nominated for Best Documentary is Ellen Kuras and Thavisouk Phrasavath's The Betrayal, which was recently released theatrically in New York. I haven't seen it, but it's also on the Academy Awards' documentary short list, so it's probably worth taking a look.
I just noticed that Sean Baker and Shih-Ching Tsou's Take Out is nominated for the John Cassavetes Award, given to the best feature made for under $500,000. If you've seen the film, which I've written about a few times this year, you know that Take Out is indeed a low-budget movie. But a pretty good one. Anyway, read about the full list of Spirit Award nominees here: here. The Independent Spirit Awards will take place on February 21.