2009's, 'Reclaiming the Blade'
http://www.reclaimingtheblade.com/ (trailer has clips of the Anderson interview)
http://www.imdb.com/title/tt0961079/
a documentary about how swords were traditionally used, interviewed Bob anderson. There's a behind the scenes shot from ESB which I hadn't seen elsewhere. Here's some of the dialog from the SW segment.
The idea of a free army. A theme in movies. (shows movie posters: Star Wars, Robin Hood, Lord of the Rings) 04:10 (movie sword play) 06:30 Bob Anderson talks: 00:09:09,315 --> 00:09:11,681 Then he said, "Oh, and he was Darth Vader." He was actually in Darth Vader's costume actually doing all the light saber work. And I was like... that sort of struck a resonance with me, you know. Oh, Darth Vader, yes. It's just a cloak and a helmet that I was underneath it all. I did choreograph the fights. I did 3 of those. It was good work for me. It became the weapon of choice in that series of films. Indeed even, it seems when somebody's making a science-fiction movie and off in space they can't seem to escape from the sword. I wonder why that is? What is it? It's your father's light saber. This is a weapon of a Jedi knight. Not as clumsy or random as a blaster. An elegant weapon for a more civilized age. To go into the future and then think about laser swords, that's brilliant. Suddenly "Star Wars" is not just a sci-fi movie, it's also a modern version of a hero legend. 09:05-10:25