Looks pretty interesting, although I don't get off on big modular synths, but then (and this is going to sound like I am completely up my own ar$e, but I'm really not lol) I am more into proper music than just making noises. I like the immediacy of instruments that you switch on and play a tune on.
There was another documentary on early synth pioneers called What the Future Sounded Like - see link below - which I found by accident because Gordon Reid (Sound on Sound reviewer) features in it. Really interesting but again not that much in the way of actual music highlights. I really enjoyed it though.