I change my desktop backgrounds frequently - this one has made it to my 8400 desktop for the month of August!
The scene is Spitfire Lake (Adirondack Park, NY) taken by Will Forbes. You can download the wallpaper from National Geographic's Photo of the Day webpage. There's something calming (almost soothing) about this picture - it's simple composition produces a stunning visual impact.
Sources & References:
- National Geographic Photo of the Day: Spitfire Lake