This documentary is essential if only for highlighting this and other parts to Kubrick, the actual man as he was as well as the "mythology" that surrounded him for being so reportedly reclusive and eccentric (the opposite was really the case, as a married man with a bunch of kids and cats and dogs who merely enjoyed privacy and creative independence as earned luxuries), with the aid of so many boxes full of "stuff" that it took the director 4 years to look through it all. As meticulous as he was in his everyday life, so was he in storing everything. We see the stills of various hats tried on for Clockwork Orange. We see the legal paperwork Kubrick fired out over a mid-70s sci-fi show that ripped off 2001. We see a handful of the hundreds of hours of audition footage of the grunts for Full Metal Jacket. Hell, we even get to see one or two "looney" videos from pranksters-cum-stalkers who sent Kubrick videos parodying his films.
We also get some touching and funny anecdotes from his family (wife and kids) and those closest to him like his assistants (Leon Vitali has some particularly good ones), all unearthing stories to go along with what's pulled out. Some of it, indeed, comes close to unbelievable. But at the same time it can range from insightful without having anything to do with movies (i.e. long transcripts about how to deal with feline behavior) and the mountains of research dedicated to Napoleon and Louis Begley's Wartime Lies. The real hardcore Kubrick fans might not find a whole lot to look at- not sure who they are as I'm possibly one and didn't bicker much- but everyone else, even casual fans, would do very well to seek this out (it's finally aired in the US on Sundance channel). At the least, we get some stuff for film-buffs to geek out on like super-duper rare behind the scenes footage with FMJ.