I came a cross Ronzo's work a while ago in an issue of Computers Arts. Ronzo's Graff work is UP all over the place, but what really stuck for me is his street gnome series. Original sculptures turned into molds to make his mini statues. Check out his site for more art or to purchase one for yourself!
Miniature monument for Lolita, a young lady of the night. Casted out of concrete.
Miniature monument for Joe (the one eyed beggar from Bethnal Green) who run out of luck and ended up living on the street. Casted out of concrete.