Having dipped right into all that is synth- and electro-pop recently (I found Dare by the Human League at a car boot sale on vinyl) I decided to look up a documentary BBC4 showed called Synth Britannia.
I can't remember when it was first shown but it isn't on iPlayer anymore. Instead, I found it on Youtube and have pasted the links to all six parts. Don't worry, its only an hour and a half long (not long enough for me, though) and covers the genre's beginnings in 1970s industrial England through to inadvertently providing the soundtrack to the social upheavals of Thatcher's Britain. I think its a great documentary and expresses how significant, irreverent, varied, daft and creative the genre was (and still is considering the synthesiser has been reigning supreme for a number of years now). Enjoy.