Painful looking code

Code that makes you experience physical pain, nausea, and/or symptoms of high blood pressure.  Merely cringing is not enough.

I barely avoided vomiting while looking at this one http://codereview.stackexchange.com/questions/14528/python-script-very-slow-any-help-to-optimise

Just in case the author (who must be Satan) deletes his masterpiece, I made an unauthorized copy http://pastebin.com/zkuHK16n

I know C in and out, and I've grasped on to some of the core C++/STL stuff.
Recently, I've been wanting to learn Fortran - anyone have any experience with it?