algorithmic modeling for Rhino
Found it almost by accident while working on something entirely different, and maybe not exactly the same kind of mapping you would find, say, in 3D studio or Blender, but a fast and cheap way to test your mesh normal orientation.
Enough foreplay, here it is:
All the first part is just to generate some noise-displaced mesh, but all in all is very simple: plug your normals into the vertex color input (I cast them to colour right outside for speed purposes). It may also be nothing new, but I searched a bit without finding anything similar.