The youtube videos on the official star wars channel look pretty good btw.
https://www.youtube.com/watch?v=F6Xa6CcShAI&list=PL148kCvXk8pDL72_FbsLq7KXD5eJUz7hC
Edit: This is the best version:
http://www.starwars.com/video/from-star-wars-to-jedi-the-making-of-a-saga