Hi, I posted few L-Systems algorithms to GH Gallery page: http://en.wiki.mcneel.com/default.aspx/McNeel/GrassHopperGallery.html
I wrote them in semi-template format to make it easy to modify. They all basically involve three parts: system definition and 2 script components. The first script is to generate the instructions string and the other is to implement these instructions. I'll add the parallel RhinoScript code to these samples in the coming days. Enjoy!
