To be honest, that's why I always advocate that you watch them in numerical order. Because as great as "I am your father is," it doesn't fundamentally change anything about the characters. Luke is still Luke -- he's the same Luke he's always been and his parentage doesn't change who he is. Just like Vader is still Vader and still responsible for his evil deeds regardless of the fact that he is the protagonists' father. But ROTS takes our characters in directions that are very rare for children's entertainment -- especially Anakin, which is why I think I'm so fascinated by his character. Maybe adults would cotton on to the fact that Anakin was going to fall...I don't know. But I think it's tough for kids to envision that or, at least, it was for me.