just sticking my head in here for a second to draw your attention to these awesome photos by Shaun Clover. He selected archival photos from the 1906 San Francisco earthquake and fire and then took photos from the exact same spot and blended them together. They look like sci-fi stories where two moments in time are blended by a wormhole or time-warp, or whatever the current fashion calls them. Awesome.
More on the project here.
Via Dino Ignacio.