Can't say I particuarly like anything from the other side of the pond. For general, everday cars, the US just doesen't have the dynamics of the european cars - at least German ones in particular.
Race cars are about the same - US racers don't really interest me although I have a lot of respect for them. Quite alot of the racing stuff is made in Britain (Lola etc).
I don't think I could ever buy an American sports car, to me they just don't feel right. Sure, a few of them are very decent cars, but they just don't get the blood flowing like the European counterparts.
I like the original GT40 (which happened to be based on a British Lola

) - saw the new and old side by side at a motorshow recently, and the original just looks so much better. Shelby Cobra is another american classic i wouldnt mind, but apart from that....