The very first one was the best one, because it relied more on good acting and surprising things than special effects, and the characters were fresh and brand new. The prequels down later had very cool special effects, but the acting was atrocious (Samuel Jackson just basically waltzed his way through his role as if he learned his lines on the fly.)

But the 3rd one (where Luke becomes a Jedi and frees Han and destroys Jaba the Hut's stronghold…that was awesome too, because we got to see how Darth at the end found his inner Annakin and helped Luke defeat the evil emperor. Luke was like Jesus in his faith that Darth was good.