+1 for the Koenigsegg CCX. Just watch Jeremy Clarkson's review of it on Top Gear. Now this guy talks up practically every supercar with his expansive vocabulary, but this was definetly that 1 car that he would absolutely kill for.
It even made him quit smoking it was that exhilirating.
http://youtube.com/watch?v=_rdJli24mvk
Let us know what you think... there aren't enough Koenigsegg's around.