Michael you beat me to it. I was going to point to that same Rhino discussion. True, such a command can create some potentially bad situations if someone imports a non-manifold mesh without knowing it. But I have found that command to be very useful in Rhino. And probably it has practical use for archviz work. For example, you could easily import a Sketchup model, run MeshToNurb, then run MergeAllFaces to get a clean nurbs model on boxy geometry. But it takes some knowledge of the mesh you putting in before you do it! I guess many of the problems occur when the mesh is created first by someone else... Either way, I don't much see the point of converting something organic like that "pighead?" to be all planar nurbs faces. It's kind of useless, except as reference. So might as well just import a mesh, and forget converting to Nurbs...

jonah