NASA's Cassini probe has been at Saturn for three years now, and the team have celebrated by putting together a slide show. Some of the captions are insufficiently detailed, but there's no quarrelling with the pictures.
(I could hope that this post will attract as many hits as the recent one whose topics included "HBO", "Mormons", and "sex" ... but it probably won't. A shame, that.)
Image credit: NASA/JPL/Space Science Institute