I guess most people put in sports cars at this point? My favorite is actually the Ford Focus. The ST is gorgeous. Britain has the Focus RS, but it's not in America unfortunately for me. XD It's small, economic, high MP, and just awesome looking. Ha!
Luxury Cars: I have a friend who's in love with the M5 Sedan, but if I were to pick a BMW, I'd have to pick the M6.
If I had to pick a sports car, I would have to say a Mustang GT. With black upholstery and red thread. Mmmm.