Japanese--a (very ugly!) 1992 Honda Civic LX 4 door. As the Craigslist ad said, "not much to look at, but runs well." For $350, who cares what it looks like?
The 08 C-Class changes look quite interesting... I've really preferred the smaller displacement engines, but it looks like the C230 type of models that push fours are all gone from the US for now.
I drive a Mazda6. It's beginning to wear on me; I think it's going to go once I know where I'm going on internship.