Saw it yesterday and loved it. Here's one thing that I've been puzzled by over the years. In the original trilogy, why did Vader never refer to Yoda? Particularly in ESB he tells Luke "Obi Wan has taught you well". True enough, but at that point most of Luke's training was done by Yoda. You'd think Vader would acknowledge the awesome power of Yoda. I guess you could argue that Vader assumed he was wiped out like the rest of the Jedi, but wouldn't he sense his existance since the force is so strong in them?