The photo above is some tiled graf by Space Invaders, on 22nd between 11th and 12th.  Space Invaders is legendary for plastering Paris with his, well, Space Invaders-inspired tiles.

In fact, I saw a couple of them last year, most notably around Bastille but also a couple around the Colette store:

Update (Feb 21, 2007).  Check out the recent work by Space Invaders using Rubik’s Cubes: