Paris mural
In Paris' 3e arrondissement (at the corner of Rue des Haudriettes and Rue des Archives), there's an awesome mural featuring Don Quixote tilting at windmills, a naked chick, and well, a couple random guys. I'm guessing the middle guy is Cervantes and the bottom guy is Picasso, making this a Spanish-artists-themed work, but it's hard to tell for sure. By the way, this is only a few blocks away from the Picasso Museum.
I tried to find an angle that would eliminate the tree from the pic, but it was pretty much impossible. Plus, as insecure as I am about taking pictures in Pittsburgh, it's even worse when I'm traveling and trying not to be such a blatant tourist. (Click on the pic for a larger version.)
Update, August 16: Someone else just took a good picture of this mural.