Whether you like George Lucas and/or his movies you have to admit he is a genius who had a lot of foresight and believe in what he was doing. He changed the industry, although he himself admits by doing so he became the very thing he fought. In the early days success was anything but a given and he was often flying by the seat of his pants. He didn't do it alone of course and many household names of today started together with him, inventing the things filmmakers today have at their hands.
So, of course this is mainly about the creation of Star Wars but if you are interesteed in filmaking in general this could also be of interest.