Was probably posted before, but this is good stuff about the space race topic, with some nice video clips (I never saw before the Voskhod airlock extension test), some nice Gemini footage too (and of course Apollo). Only downside, there is little mention of the unmanned programs, which were important (Luna, Surveyor, Ranger...)
You really see how USA went from the Vanguard amateur-ish stuff to real rockets and the Saturn V lunar train (thanks W. Von Braun

).