I saw a brief story on the news today about the premier of the film. There were two guys standing in the foyer to the cinema, dressed as Darth Vader and Luke Skywalker.
They were pitched in mock-battle with those ForceFX lightsabers. This was the Dialogue, while they danced around, fighting:
Darth:
"Luke, I know what you're getting for Christmas!"
Luke:
"Nooooo!"
Darth:
"Luke!! I know what you're getting for Christmas!"
Luke:
"It can't be true! How do you know?"
(wait for it)
Darth - breathes deep:
"I felt your presents!!"
