Why is Empire so good?

[Daetrin[Admin]]

Why is Empire Strikes Back considered one of, if not the best, Star Wars film? "I felt I needed humor in the picture, and yet I couldn't have gags. I felt I needed a love story, and yet I couldn't have a lot of smooching and kissing and all that stuff. And it had to be implied". -- Irvin Kershner https://www.youtube.com/watch?v=SVlXXwCIUiQ