My friend Pedro Matos got me hooked on another hot artist named Banksy.  He seems to be a type of graphiti artist, as he does his works on the side of building , and he uses spray painted stencils.  His pieces are so detailed and leave you wondering.  I'm guessing he is based out of London as most of his pieces are found there. http://www.subversionmagazine.com/?p=162 this is a link to his newest rendition of one of his older works.