I'm not quite smart enough to talk at any depth about Andrei Tarkovsky. His films are, in my experience, unique. Only Kubrick's films have an effect that are remotely similar, but even that is an inadequate comparison. This documentary is best appreciated after you have made yourself familiar with Tarkovsky's seven great, complex, troubling movies; after seeing them, this film serves both as an excellent window into the mind of the man who made them, and as a touching eulogy for his departure. That aside, it's also one of the best films about filmmaking ever made. It's available on the DVD release of "The Sacrifice" as the bottom half of an excellent double feature.