Dark City, Tron, Real Genius, 2001: A Space Oddysey & its low-budget sequel, Hackers, The Matrix series, Ghost In The Shell, Pi, eXistenZ, Minority Report, Appleseed, Cypher, A Scanner Darkly & Akira are a few that come to mind. I don't quite consider Star Wars being a geek movie. Sure, it'd fit the Star Wars universe as a whole, but not the movies per se. Primer was amazing! The shoestring budget isn't that evident, and the story and direction are astounding, to say the least. I needed to watch it at least 3 times before I started understanding what was going on.