Surf's Up, on Titan
Titan, a moon of Saturn's, is the latest planetary body (get of my ass IAU) with noticable bodies of liquid (though, probably not water).
This is really interesting news. The presence carbon based solvents in large liquid quantities on several extra-terrestial bodies gives some cool work for theoretical exo-biologists. It's also cool for theoretical civil engineers. How would we have to adapt (in regards to tool usage and social behaviours etc) to live there? It would certainly be a no smoking environment I'd suspect.