I couldn't really help myself ... whenever I see any sort of "turtle graphics" engine, I have to re-write my favorite line-art program:

http://doctorfractal.pencilcode.net/edit/mystery_one

Sadly, that halts only a tiny way into the drawing when "speed Infinity" is set, and even at "speed 1000" the turtle still seems to run pretty slow (at least it finishes the whole drawing that way).