Freeware for Windows only: 360desktop
It turns your Windows desktop into a 360-degree virtual desktop.
Get almost unlimited desktop space; make desktop widgets from your favorite pieces of the web, plus create & share 360° interactive wallpaper. See something that you like online? You can now clip it and put it right on the desktop: any part of any webpage or grab your favorite web widgets, RSS feeds, games, videos - whatever you like - it's totally up to you!
And what's coming next ...
Create your own interactive 360's. Think of the desktop as an "interactive canvas". Create simple 360's from your favorite images, photos, or online albums such as Flickr, or transform the desktop into a multimedia mash-up, with web content integrated into the photo background.
Sounds pretty cool. Check it out. What do you think?