1. 'I Am Your Father' ('The Empire Strikes Back')
The light saber duel between Luke Skywalker and Darth Vader was easily the most anticipated moment in the first of the Star Wars sequels, and it lived up to the hype: Vader relentlessly pushes Luke to his physical limits, as the young Jedi-in-training tries to muster his still-growing abilities. And then there's the moment that stunned audiences and elevated the franchise into the realm of tragedy: Luke learns simultaneously of both his mentor Obi-Wan's deception and his own hideous lineage in one fell swoop. (Take that, Freud!) No wonder he throws himself off that bridge — even if he lives, despairing and confused, to fight another day.