The 3 Part Climax:
1) The Battle of Endor (Led by Han and Leia)
2) Luke Confronts his Father & The Fall of the Emperor
3) The Destruction of the Second Death Star (Lando's Moment)
There are so many reasons to love this movie.
The Rescue of Han Solo from Jabba: This official wraps up the Han Solo in debt sub-plot that was established when we first met the character in A NEW HOPE.
The Emperor was Finally Revealled: Well alright this might not work as well now that the prequels are out but this was the first time we saw The Emperor as kids.
The Speeder Bike Chase: Alright, so this was a special effects moment. But it was definitely one of the most memorable and exciting moments in all the films!
The Final Celebration with Our Heroes: Like I said, this movie gets a lot of crap because of the Ewoks but I think it's kind of cool that while the entire galaxy celebrates the FALL OF THE EMPIRE, our heroes are having their own private party in the woods with each other.
All in all this was a great final chapter for our heroes and a fitting end to the STAR WARS story.