I think the new Prius is pretty nasty-looking. It looks like Toyota watched some near-future sci-fi movies and decided they needed to make this high-tech car look like what everyone thinks a FuturCar is supposed to look like.
It's a pretty neat vehicle, actually. But it has the ovoid aerodynamics of a moose turd.
Incidentally, when my mother in law was in design school a few years back, she had a project to design the ugliest car she possibly could. A couple years later, the Aztec hit the streets, and she did a massive double-take: that thing has EXACTLY the same front-end she designed, with the double-nostrilled snout and everything.