In ESB, I've always thought the moment in the Bespin duel when Vader pushes Luke to the ground on the bridge looked rather awkward. I know it's impossible to do, but I think a close up behind Luke's back facing/slightly looking up at Vader would make that a lot clearer. The current angle is so far away that it's hard to tell what's going on, they just kind of stand still for a moment and Luke randomly falls. Plus the sudden lack of lightsaber sounds makes the silence a bit awkward as well.

All in my opinion, of course.