Thanks for sharing, I'll check that out!
My prefered method of watching stuff like this is to use hola unblocker, works with Netflix, Channel4, basically anything, and of course BBC. I've been watching some awesome Attenborough from the 60's on BBC iPlayer lately
There's also this doco on the Soviet space program, it's been a while since I watched it but I seem to remember it was ok:
https://www.youtube.com/watch?v=QQL9kUCdsu4