Feng Zhu is a concept artist/designer that has been working professionally for over 11 yrs now -- working on games, films and other forms of entertainment and industrial design (for companies such as: Microsoft, Electronic Arts, Sony, Activision, Industrial Light+Magic, NCSoft, Warner Brothers, Lucasfilm, Bay Films, Epic Games, and many other top studios)
He also started his own design school -- http://www.fengzhudesign.com/ which has tons of good information/training, etc.. i especially want to point you to his videos, which are streamed from YouTube, in which he discusses student works and how to make them better..
check out his artwork/portfolio here: http://www.fengzhudesign.com/portfolio.html
check out his design school here: http://www.fengzhudesign.com/index.html
check out his YouTube training/insight videos here: http://www.youtube.com/FZDSCHOOL