There was a great movie which I believe was called 'Little Boy and Fat Man', depicting the development of the atomic bomb.
Also, if you aren't averse to Canuck productions, there a docudrama (some made up dialogue and a couple of characters fused into one) all about the Avro Arrow (which was the most superior aircraft on the face of the planet at the time). I think that it's available from CBC television if not on the net. Most of the actor-duplicated real people involved in the project went on to design the Apollo mission, the Concorde, the Shuttle, and a lot of other things. (The lunar lander used by Apollo was originally designed to be launched from the Arrow.) It's a fascinating study of both (simplified) aeronautical engineering and the stupidity of politics. (If you have trouble finding it, Google Dan Ackroyd (who starred in it) and you'll probably find some links to it.