Another thing I would like Adywan to address is the window in the Emperor's throne room. We never see Endore in his window, but based on my observation of its location of the Death Star viewed from the aerial shots, it appears that Endore should be visible in the window sometimes depending on how fast the Death Star orbits the moon. I assume that the Throne room is located right on the top of the north pole of the Death Star. I think in some scenes of the Emperor's throne room, we should see Endore in the Windows. It will make it feel more real and less like a set.

Based on this image, it looks like you should be able to see Endore in the Emperor's throne room window:

I just BS'ed some color in the window to give you an idea of what I think the perspective of what Endore in the window should look like. Hopefully you guys can do much better ;-):

A continuity error in the movie is in this scene here:

At this point in the movie, the Star Destroyes were seperated from the rebel fleet and just being used to block them in. But in this picture it appears the rebel fleet is mixed in with the Star Destroyers. This doesn't happen until after this scene.