As noted on the Kentucky Satellite blog (KySat), CICLOPS, the people responsible for the breathtaking images taken by Cassini as it travels among Saturn and its moons, held a contest so the public could choose its favorite image. And the results are in.
The winning color image, which shows an eclipse of the sun as seen from the other side of Saturn, is shown above. Nestled just inside the outermost ring on the left side of the picture is our home, Earth.
An image roughly 2700 x 1300 pixels can be found here. I've spread it across the Macbook desktop.