Rick Genest portrait
Software used:
Modeling, texturing - Luxology modo
Sculpting - Zbrush
Rendering - Marmoset Toolbag

Hires images here: http://www.nino3thd.com/2012/11/09/rick-genest-portrait/#.ULjrfN2rpZ8
Making of (italian) here: http://www.charactersforum.com/index.php?topic=2207.0