It looks like he used this image (http://www.flickr.com/photos/xp0s3/7851153390/in/photostream/ http://www.flickr.com/photos/xp0s3/7851153390/in/photostream...)

It looks like he used this image (http://www.flickr.com/photos/xp0s3/7851153390/in/photostream/ http://www.flickr.com/photos/xp0s3/7851153390/in/photostream...), potentially just searching on Flickr for something eye catching and due to the "We're watching you" concept?