Live wallpapers can be really fun and interactive, but PhotoWall Live Wallpaper makes them intensely personal. It goes beyond using the pictures in your gallery and extends to Facebook.
aCircuit Board is a live wallpaper for Android that shows you the beautiful circuit board—from the chips to the conductive traces—in all its geeky glory. If you love a good ol' gadget teardown, this is your wallpaper.
This might just qualify as the most wonderful thing I've seen all day: A customizable Super Mario live wallpaper for Android devices. It works on Android 2.1 (and up) and looks crazy fun. Check out the video and you'll see.