This scene was classic when Darth Vader said nothing.  You saw him looking at his son being killed, then back at the Emperor and without saying a word he makes the decision to sacrifice himself to save his son.  You didn't need words.  Unfortunately George Lucas can't leave his classic movies alone and now Darth shouts out a cheesy 'Nooo!' in this scene.  Why not add a song too, George?  Sigh.  Check out the new version of this scene after the jump.