I love this bit of dialogue from ROTJ...

[thecliffguy]

LUKE: Search your feelings, Father, you can't do this. I feel the conflict within you. Let go of your hate.

DARTH VADER: It is too late for me, son. The Emperor will show you the true nature of the Force. He is your master now.

LUKE: Then my father is truly dead.

.....

Dunno why that interchange popped into my head today...