La Mesa is an incredibly talented realistic painter from Spain. He seems to have a good understanding of the way light hits an object. His attention to detail (especially with hair) reminds me a bit of Dan Witz, if Witz were to work with spray paint instead of acrylic. A lot of his work is in black and white but he is also pretty skilled at painting in color. You can find more by La Mesa on his Flickr and Unurth posted a few beautiful walls in Western Sahara in January.
Photos by La Mesa