The Skyrim LiveWallpaper is a nice interactive Wallpaper showing one of four skyrim backgrounds. The snow will fall from the top to the bottom and will react if you tilt the phone. If you tilt the device for instance to the right, the snow will also fall slightly to the right.
In the settings of the LiveWallpaper you can specify the background image as well as how much snow there will be.
* pro version not available anymore due to market, sorry