Ken Burns' new "Muhammad Ali" docuseries is worth going the distance Posted Sep 21, 2021 Watching "Muhammad Ali" makes a person appreciate the serious duty Ken Burns undertook in making the documentary. This isn't said from a nostalgic or emotional place, although the four-part documentary is designed to elicit an array of feelings about the boxer, some of them conflicting. "Muhammad Ali" more than qualifies for as a heavyweight. (Salon.com)