The models are kindly provided by Jeremy Birn and Dan Wade, created for the lighting challenges in the General Lighting and Rendering forums section.
It was a great experience to do some 'classic' exercise and have instant comparison and feedback with all the other contributors. I felt like practising painting in an art class, simply great!

First practical use of my own created EI03 (visit: http://www.cs.purdue.edu/homes/sun/CIRL/Project/PhysIllumModel/physIllumModel.html for details) and hls (Hapke/Lommel-Seeliger BRDF implementation) mental ray shaders.

Special thanks to Gonzalo Garramuño for providing gg_fakefur.
Very special thanks to Jeremy Pronk for creating IBL Tools.
Last but not least thank you Master Zap for the wonderful sss shader!