This is also interesting with some of his responses...
Why didn't Lucas have you direct Return of the Jedi?
For two reasons: One, I didn't want to. Two, I was asked halfway through shooting Empire, and by that time I knew that Jedi would be a three-year project. It took two years and nine months for me to do Empire, and I didn't want to go through that again. Also, I didn't think it was good to do two for George. I didn't want to be a Lucas employee. And I'd read the script of Jedi — not the whole script, but a scaled-down version — and I didn't believe it.
How did you like the changes made to Empire for the 1997 theatrical rerelease?
My film is the way I cut it. The other films were changed — a lot. My film, I can tell you just what was done. The Snow Creature [Wampa] was added, which was good for merchandising. It was okay, but I could have lived without it.