Oh God what I geek I am, Goobye all..

[Gemini Cricket]

Originally Posted by Cadaverous Pallor

How is it that I can hate the "Noooo!" but feel like cheering every time I watch Luke say "I'll never join you" or "I'll never turn to the dark side"??

You mean Luke's 'Nooo!' in Empire? I think it's the weird face he makes while he says it. His mouth is all twisted and forced.
The other two lines are delivered nicely because he uses a more gutteral low voice that just shows the contempt we all feel for Vader at this point in the movie. I like the way he says those lines, too.