In episode IV, what if Luke Skywalker hadn't yelled out at Obi-Wan Kenobi when he was in the middle of a Light Sabre battle with Darth Vader? If you recall, Obi-Wan Kenobi was holding his own until Luke yells out from a distance "Bennnnnn!", thus distracting him. Ben then puts his light sabre down and takes one for the team so to speak.
