lol.. its not a sole PS creation dude. Its modelled in a CG s/w and then texturized through PS. As u can prolly see from the logos, its CGSociety which implies we have a major dominance of a 3D Gfx s/w rather than a 2D one.
Well, to be more elucidative, PS=IP[Image Processing] & Maya,3DSMax,Bryce=CG[Computer Graphics]
Here are a few more samples rendered in Maya.
PS: The second last one is the bestest i have ever seen. XSI+Maya they say. 'Exuberantly Wonderous' i squeak! :O