Johnny Cash: The Man, His World, His Music (1969, R. Elfstrom)
Filmaker Robert Elfstrom follows Johnny Cash on tour, back home, and everywhere else in this documentary about Cash that spanned 1968-69.

The thing that makes this documentary great and the best about Johnny Cash is that it's Cash the human, at home with his parents, on his tour bus with June Carter and Carl Perkins, at Wounded Knee, and particularily a wonderful recording session with Bob Dylan. A fantastic documentary, and it's amateurish/grainy visuals aren't necessarily bad, as it gives the film a gritty homemade feel.