Just came across this documentary that was produced and aired a few months ago by/on BBC Four. Focuses on the development of synthpop in England. I've gotten through the first three parts and so far it is amazing! Interviews with Kraftwerk, The Normal, Cab Voltaire. Unfortuanately 'Part 9/9' has been blocked due to the copyright infringement - most likely the rest will be blocked soon so watch it while you can!
More information available at BBC.co.uk.
I wish BBC would start broadcasting this stuff on BBC America already, or have DVDs of it available for purchase. I would totally blow some $$ on this - anything to make it available in the US in a form that won't be blocked...
UPDATE: Thanks to www.ParalisisNYC.com, the tail end of would have been 'Part 9' is now available - approximately the last seven minutes: