In a desperate attempt to come back on topic :D :
I may have mentioned it some time ago, but I've noticed quite some continuity error during the Cloud City escape; indeed, we see Chewie sitting in the cockpit, and 3PO is visible in the background. Yet, right after this short shot, we see R2 dragging his friend on the floor, and he was not visible in the previous shot, where we should have seen him at least arrive and attach wires to 3PO or something like that.