normal maps in xsi.
I love how this is comming together and that your using xsi. I just wanted to point out that you can connect world space normal maps directly into the bump map node of the material. The only thing you have to do to it is math subtract .5 and then multiply that by 2. This will effectively rerange the pixel values so that mental ray can do a proper normal map. There are also vector space conversion nodes that can convert normal maps. I just thought it might worth checking out, tho the d3 shader works fine as well. Great job, I defiantely appreciated the nose on the forehead look. 
p.
