I stumbled across this site from a talented someone who's apperently very specialized in the art of concept. 
Here are some examples:
[Blocked Image: http://mv.cgcommunity.com/images/lmsmatr1.jpg]
[Blocked Image: http://mv.cgcommunity.com/images/shipdesign1.jpg]
[Blocked Image: http://mv.cgcommunity.com/images/mathias_emrah01.jpg]
[Blocked Image: http://mv.cgcommunity.com/images/epic.jpg]
I thaught some of you guys might want to check this out. 
