If you like old documentaries about life, music and culture I can highly recommend Folkstreams, A National Preserve of Documentary Films about American Roots Cultures. There are a couple of documentaries by Alan Lomax that are pretty interesting.
I love this clip, I have feeling that David Lindley have never bought a guitar himself, just borrowed other peoples guitars until they have forgotten that he has them and they become his.
The documentary film about Levin that Andreas Brink has been working on for the last couple of years is finished now and can be bought from Anakron film. The cost, including shipping to Europe, is 22€ and I think you just send an email to info@anakronfilm.se to get a copy, he could probably ship outside Europe too if you ask. There are a few people in the film that I half know via the internet, we hang on the same Swedish acoustic guitar forum. I’m sure it will be an hour of pure Levin galore.
One of my favourite music documentaries is Heartworn Highways. It’s based around the whole Texas scene with Townes van Zandt, Guy Clark, Rodney Crowell, and Steve Earle, just to name a few. I thought it would be possible to find the documentary in full on Youtube but apparently not so you will have to buy it or download it. These are my two of my favourite clips from the movie. The first one because it shows how awesome session musicians were back then, check out Albert Lee on guitar playing a 335, recorded at Creative Workshop in Nashville. The second clip is because it shows how truly talented Townes van Zandt was as a songwriter.