1977 all the way.
I find the elegance of Mr. Guiness much more appealing than green puppets...but thats just my opinion.

Funniest SW quote :

Vader: "He will come to meeeeeeeee?"
Emperor: "[...]He will come to youuu, and then you will bring him before me"

Am I the only one who cant help laughing at that part? \:D

"Come out and take it, you dirty, yellow-bellied rat, or I'll give it to you through the door!"

- James Cagney in "Taxi!" (1932)