The World Wildlife Funds offers an incredible array of screen wallpaper at http://wwf.worldwildlife.org/site/PageServer?pagename=wallpapersignup.Subjects range from gorillas (like above) to the Gallapagos to monarch butterflies.And, it's all free.
I took this on the ferry going from New Zealand's north island to the south island. (New Zealand, by the way, is basically the best ultra-compact country for outdoor adventuring that exists.) If you can't tell,...