StanleyPain I saw this when it originally aired and it's a pretty great documentary. There's no way possible they could cram every important figure or person into this thing but you will fucking orgasm if you enjoy electronic/new wave/industrial music at all. It's awesome.
I also recommend "Kraftwerk and the Electronic Music Revolution" which, despite the title, is actually a really great doc about the emergence of experimental Krautrock and it's evolution into the electronic music scene of the late 60s/early 70s and beyond. It's something like 4 hours, but oh so worth it.
Scrimmjob i recently found a cache of used can records, and it has reinvigorated my love of krautrock.