I like any car from any nation, just depends on the model and brand.
American cars are actually not bad, but manufacturers seriously need to refine their original models. It's ridiculous how Ford is pumping out these weird models like the Fusion or whatnot. Just causes more confusion.
German cars are nice. Luxury, performance and looks all in one. Too bad replacement parts cost a bitch.
Japanese cars are decent, but they're SO reliable. Cheap too.
Italian are nice, but FAR too expensive. They're not practical either. Then again...if you can afford one, I'm pretty sure you could afford the gas.