Yesterday's Times had a story on master photographer Sebastiao Salgado. I was not familiar with his work at all but I loved what I saw in the paper.
Many of his photo-essays are online. Other than the striking "Genesis" images, the one that really impressed me was his series on the Serra Pelada in Brazil. You can see some of those on this Flickr photostream.
The Guardian carried a series of columns between 2005 and 2007, written by the photographer himself, on Genesis. For some reason, the images are not easily accessible on The Guardian.A little Genesis sampler can be seen here. Also on the Guardian: Salgado's "best shot".