Ask HN: What are your favorite instances of software depicted in movies?

There are countless examples of software being depicted in movies and television, most of which are completely absurd, inaccurate, and even insulting (to those of us who work with computers and write software regularly). These range from flashing, red alerts informing you that access is denied to intense hacking scenes to monitors in the background of a control room with lots of data scrolling down the terminal interface. What are your favorites (or rather least favorites)? Descriptions are fine, but links to actual video clips are better.

For example, the first part of this video contains some of the classic scenes from the original Jurassic Park movie -- http://www.youtube.com/watch?v=znrc2iGyZ8E