I think Vader's floating jump after disarming Luke in The Empire Strikes Back
is the creepiest move he ever did. Part of its effectiveness as a surprise move comes from us never having seen him do anything like it. As we learn about telekinetic Force powers in that sequel, it makes sense in that context. But Luke's duel with Vader is a revelation to Luke and to us that there is much that Yoda never got a chance to show him. We are still learning during the duel, with Luke, just how far Force powers go.
This is yet another reason why the films should be watched—and the story told—in the order 4, 5, 6, 1, 2, 3, the order in which the ideas were developed in the real world. Change that order, and the suspense in The Empire Strikes Back
is lost, beyond just the climax being spoiled.