Here is another image that played with lights. It reminds me a lot of computer games but it captures an idea of freedom and creativity. I really liked how the colors ranged from dark to light across the image and I liked how the woman is immersed in it. I think this is one of those wallpapers which will blow me away when I opened my computer.
Source: http://blog.sevenedge.be/2008/08/04/wallpapers-experimenten-natuur-achtergronden-widescreen/