I actually had my two nephews over when they were 5 and 7 and I showed them Star Wars for the first time. When we got to Empire, I looked over at the 7 year old as Vader revealed he was Luke's father, and his jaw was hanging open in astonishment.
I did that. I gave him that moment. And I got to witness it happen. Everyone's life can be divided into two eras; before Vader reveals, and after. I saw my nephew as he transitioned. It was amazing.
I'm sort of going through this with my roommate's nephews. I am not the biggest "Star Wars" fan, but I do have opinions; and when the kids ask me which character I like best I'm forced to defend why I prefer Luke to Jango Fett.
Someday they'll ask me who are my favorite Cardassians and why, and I will know my work is done.
I made embarrassingly happy noises at the sight of the baby with the Yoda ears every time she was on screen. That may be the absolute cutest thing I've ever seen in my life.