The big one is Adywan's *Star Wars: Revisited*, of course.

I honestly haven't seen any other OT edits. Well, I think I saw an ROTJ edit by Spence that wasn't bad, but I really don't think ROTJ can be improved that much by editing - either you're just re-arranging scenes, or cutting out as much of the Ewoks as you can, and I don't think either of those things fixes the story problems ROTJ has. It's not like the prequels, where there's an okay story buried under a mound of crap that can be sloughed off to turn them into okay movies - ROTJ is just an okay movie.