Talking about error... ever noticed in the Jabba szene, when Jabba and Han are walking next to each another along the Falcon, they had to retouch some portion of the background (the "rim" on the falcon) that got covered by Jabba's original performer, and that part of the image wobbles around, changes perspective in a very odd way, and then snaps back to normal. But I guess I couldn't have done it any better.