I love procedural graphics... And game levels... And... Most spare time I spend generating graphics and music procedurally. The code isn't pretty (it's really iterating a lot of times and no time for refactoring...) but I guess we all should put it online like this :)
The demoscene is basically almost all about procedurally generated graphics and music - perhaps you could try entering your work at a demoparty competition. They don't much care about pretty code, but they do love pretty results. ;-)
I'm surprised there wasn't at least a brief mention of POV-Ray (povray). One of the first procedural graphics engines which is still active, and still used as an optional backend of Blender http://www.povray.org/
