Desktop Earth - You should run it as admin.
Earth 3D Live Wallpaper - Earth 3D Live Wallpaper helps you capture the beauty of mother earth.
EarthView - Free Cloud Data Download
Rotating Earth Wallpaper HD - Rotating Earth Wallpaper HD gives you a full-fledged view of the earth in 3D.
Earth Live Wallpaper - Earth Live Wallpaper helps you view the earth with magnificent detail and is a great substitute for your plain desktop wallpaper.
TerraTime - TerraTime provides an amazing, interactive, real-time virtual Earth.