x-ray materials

Sonix did some really nice x-ray materials, however I can't find the link any more! its a 404 :( http://www.free-webspace.biz/sonix/Cars/Blender234CarMaterialLibraryR1.html
This is the blendernation post:
http://www.blendernation.com/2006/05/11/car-material-library/

Here is a link to a blender materials repository.
http://www.blender-materials.org/index.php

It would be really cool if there was a comp nodes/npr shader equivalent. It would also be better if comp nodes could be saved in full, ie the input and output nodes. Oh well....