...that fights back.
The languages of my choice are
No real hacker should ever miss the Obfuscated C Contest nor its Perl Counterpart, these are truly awful. Wish I could write gems like those.
Participating or stealing^Wborrowing code from the entries is worth its time for sure, because you'd improve your job security vastly by emanating that weird code :-)
I'm firmly in favour of open source software, whatever exactly you may call it. The dark side would like to condition everybody with propaganda like this, but it is not going to work: