Lemmy - Documentary about, er, Lemmy..... It's very well done, with lots of comments from luminaries of the rock/metal world, and you do eventually get a surprising amount of insight into Lemmy's life history, although he's not the most garrulous bloke in the world. My only criticism would be that perhaps it's a little too reverential - the only hint of anything less than outright worship comes from the members of Hawkwind - there still seems to be some bad blood there.
Good Blu-ray, too, with loads of extra music, interviews and features (although it looks like the US Blu-ray has even more bonus content)