Via Digg, The Huffington Post has a photogallery of rather clever works of Mario-inspired art. They include this work of graffiti that ingeniously made use of street-side drainage pipes to recreate a scene from the game.
Also, again thanks to Digg, I found this picture that imagined Super Mario Bros. as a Grand Theft Auto-type game. Or possibly The Sopranos. I'm not sure, because I've never seen The Sopranos. Is it a good show?