The Rolling Stones: Gimme Shelter: The Criterion Collection [Blu-ray] (1970) for $28.99

To cite Gimme Shelter as the greatest rock documentary ever filmed is to damn it with faint praise. This 1970 release benefits from a horrifying serendipity in the timing of the shoot, which brought filmmakers Albert and David Maysles and Charlotte Zwerin aboard as the Rolling Stones' tumultuous 1969 American tour neared its end. By following the band to the Altamont Speedway near San Francisco for a fatally mismanaged free concert, the Maysles and Zwerin wound up shooting what's been accurately dubbed rock's equivalent to the Zapruder film.