The link is to a BBC Four documentary called Synth Britannia and it's great. Besides the production value, there are interviews with seminal artists complete with historic perspective and (gasp) official music of the pre- and New Wave period.
If you haven't heard, I'm doing a video series on basic synth programming on my YouTube channel. The program I'm using, Syntorial, has helped me to deepen my connection with these futuristic sounds. If you're new to synthesis, or just haven't put in much time, check out these resources.