Make the “eyes” of Darth Vader’s helmet blink like Ewok eyes.

Have the camera-blocking Ronto walk across the screen at key dramatic moments in every film.

Digitally add a mustache and stubble to Luke’s face in RotJ, then digitally remove that same mustache, artificially smoothing out his face in the process, and giving his upper lip a strange, uncanny valley quality.

(Sorry, I accidentally pressed “Quote” instead of “Edit” on my first comment. That’s why it’s two comments in a row.)