This image was rendered in 96 bpp using depth of field blurring, bump mapping, and environment mapping. 
Everything in the scene is lit with the environment map.

Copyright info:
swirls_bump.bmp is part of nvidia's free public texture library.
env2.bmp is copyright Paul Debevec, from his page http://athens.ict.usc.edu/Probes/
I made the steel_bump.bmp normal map myself.