After Darth Vader's epic battle with Luke, he leaves Bespin to return to his Star Destroyer. In the original cut for Empire, he says "Bring My Shuttle", with a tone that easily conveyed how cheesed off his was in losing Luke down a ventilation shaft. Don't pay attention to the Special Edition, where they mucked it all up. Gorgeous black and gold spiderweb-pattern, befitting the Dark Lord of the Sith.