Just re-aqainting myself with "Sculptris" as they are about to release a new version very soon.
Its based on an old comic strip drawn by Basil Wolverton.( Google, Brain Bats from Venus)
Spot the difference...I tried some fake subsurface scattering on this one,and added a bit of red to the hatch.And completely removed the ambient light.I dont know if its better or what.That is the biggest problem I find with cg stuff,you can tweak forever.Or maybe that isnt a problem.
Here is the comic.