I had always liked ROTJ the best. Then I grew up, watched the trilogy again, and much to my surprise the Empire Strikes Back was a really amazing movie. It was done way better than the other two, the character development was extremely good, and I love it now.
My favorite 'moment' is still the final battle scene. I fast-forward ROTJ until I get there.
Right is right even if nobody is doing it, and wrong is wrong even if everybody is doing it.