Nissan 350Z
5
Faster than many sports cars twice or three times its price, the 350z simply kicks ass.
Its short and squat design looks cool (I think it looks better than the newer 370z, even), but it's also functional: there's absolutely no body roll around tight curves, even at high speeds. The engine sounds downright fierce when you hit 5,000 rpms.
Take all that and then factor in Nissan reliability and low maintenance costs and you have yourself one hell of an automobile -- which you will enjoy for years and years.