If you have followed this website for a while you already know that I am a big fan of this documentary and did a interview with the director and a review of the film.
If not go now and check out their website and buy or see it for a small sum on their Vimeo channel...
http://europein8bits.com/
There is a lot of Nanoloop being used by the musicians (in Gameboy format) and there is a segment with the developer of Nanoloop in the film.