And to be honest, the DVD picture is so dark, and the shot is so short, I can't tell for sure whether Peter's got his Chewie head on or not.
It's not so much that you can actually see the back of his head, just that the head is black when it should be brown. I figured it might be more noticeable because Adywan has brighteneed the video slightly (I think he said that). Anyway, for the most part I agree with DE, it is not a glaring error, just something that kind of bothered me.