I created this for fun a while ago, I always like to put celebrities in roles they might not usually play, can you guess who this is? (check the placard). It first started as just a likeness exercise but i was having too much fun with it and now look what happened.
All the modeling was done in Maya, the bust itself was heavily zbrushed then exported at a high res for rendering with mental ray, and of course some Photoshop comp work afterwords. Finished in May of 2009.
Scroll down to see the raw zbrush sculpt.