If user interface design is your thing, you will probably want to check out this "Star Wars" supercut video from user-experience designer Dino Ignacio. It shows every time any character in "Star Wars: Episode IV - A New Hope" interacted with machines, doors, screens, levers, knobs and buttons.
I was particularly intrigued by the graphical user interface (GUI) elements in the clip. Even though they are somewhat basic by today's standards, "Star Wars" had some pretty impressive GUIs for the time, especially considering that the film was released a month before Steve Jobs and Steve Wozniak introduced the world to the Apple II personal computer. Even the idea of a GUI was somewhat novel, as they didn't really go mainstream until the early '70s with devices like the Xerox Alto.
Ignacio is a GUI guy too. He currently serves as a user-experience director at Electronic Art's Visceral Studios, and designed the innovative GUI featured in Visceral's Dead Space video game series.
You can watch Luke Skywalker, Princess Leia, R2-D2 and the rest of your favorite "Star Wars" characters interacting with things for yourself in the video at the top of this post.