What is the most insanely quotable movie of all time?

Some movies have beautiful visuals, other movies have great action sequences or clever plots. But the movies we love the best are usually the ones with the most quotable lines of dialogue. What's the most quotable science fiction or fantasy movie ever made?

Please include a picture, poster or clip representing your chosen movie. And please mention the Name, Year, and Some Representative Quotes. Thanks!

Top image: The Adventures of Buckaroo Banzai Across the 8th Dimension