No, I don’t know why I’m writing this one, either: most of my readership consists of geeks. But, hey, content is content.
A quick note: I am operating under the assumption that you don’t need to be told that you should watch the Star Wars, Star Trek, and/or Indiana Jones series; lots of people who aren’t geeks have watched those films, anyway. I also don’t mean to suggest that No True Geek would have not seen (or not liked) the movies below: merely that in my experience these movies have informed the geek collective worldview in significant ways. Keep in mind as well that this list is not comprehensive; there’s plenty of other films that could be on this list. Lastly, none of these are necessarily the best movies in the world, or even the best geek movies. Merely influential, oft-quoted ones.
Anyway, in no particular order: