Not much to say that hasn't already been said. Extremely detailed and very informative. I love the candid moments of the cast in crew in the behind-the-scenes footage, as well as comparisons to how the scripts were revised.
I did notice a couple video glitches during transitions that could have been smoother. Also, one major audio glitch where Mark Hamill is talking about something, but the stereo tracks aren't matched creating a really bad echo. This glitch made what he was saying almost impossible to understand.
Overall enlightening and very entertaining. Kudos!