Joe Bussard Documentary
Watched this from Netflix last night and it was excellent. It's great from a musical standpoint, from a historical standpoint and from a collector standpoint. I thoroughly enjoyed this and it clocks in at an hour with plenty of extra features if you'd like to learn/see more. From the description:
"Joe Bussard is preserving the raw music of the American South, including blues, hillbilly, bluegrass, gospel and jazz. In combing the region for masterpieces primarily from the 1920s and '30s, Bussard has amassed more than 25,000 records."