Artistic Code

Couldn't decide if this belonged here or Cosmos or somewhere else. Feel free to move it.

I'm doing an art project, and I want to know: What is the most artful open-source security code you know of? You know, the stuff that's so brilliant it just blows you away?

there's only one answer to that

http://www.ioccc.org/main.html

check out some of the winners. even if you think that c is something in oranges you will know why it's cool