Here’s a great image of all the bodies in the Solar System in order of size. It only goes down to a diameter of 200 miles - otherwise it would get very silly indeed. Note that several planets fall after several moons in the rankings. also note the small collection of dwarf planets and transneptunian objects from Eris onward. Also, for the sake of my own blog, I have rotated the image by 90 degrees. Get the correct orientation here.

From Bad Astronomy and Universe Today’s forums, via the Bad Astronomy blog.