ETs

You like the search for life on other planets.

I'm not gonna go off all X-Files on you. The nearest intelligent life is almost certainly distant enough that we'll probably never get to meet face-to-tentacle. But the discovery of even a single alien cell would confirm not only that there's life elsewhere in the universe, but that there's a decent chance evolution has produced intelligent life on other planets as well.

The odds are fading for our solar system, though. Mars missions have failed to produce evidence. Optimists have shifted their gaze to Europa, one of the moons of Jupiter (Callisto and Saturn's Titan are other - distant? -maybes). At some point in the past, a liquid ocean existed beneath Europa's frozen mantle; there may still be liquid - even water - under the ice (http://science.nasa.gov/newhome/headlines/ast09sep99_1.htm).

Actually, when it comes to proving the existence of a mass population of highly-evolved beings with superior intelligence, Europa has one distinct advantage over Europe itself: If there is life on that moon, there's no indication that it's embraced the sport of soccer.