I watched this yesterday on vimeo, and it was excellent, I really enjoyed it. I found out a hell of a lot that I never knew while being completely entertained. I wish official releases could be more like this, it beats the hell out of any in movie behind the scenes option you get with blurays.
It did leave me a little sad though. The care and craftsmanship, real locations and stuntwork that went into making the thing, that today would be taken care of digitally. Also Speilberg and Lucas seem like different guys completely, I miss the 80's.