Backgrounds and Screen Savers

In Mac OS X you can set your screen saver as your background image. To do so, run the following command:
/System/Library/Frameworks/ScreenSaver.framework/Resources/ScreenSaverEngine.app/Contents/MacOS/ScreenSaverEngine -background

Once you close Terminal or hit Control-C then you will set the background back to what your initial background was. Hope you enjoy!