I am going with the Mini Cooper.
EDIT: Please post a picture. I was intending this thread to be a bit of a picture gallery.
I just found out it was in production from 1959 until the year 2000 which is amazing.
It's a rally thoroughbred and it's one of the most charming cars ever.
I dream of one day owning one.
I would also put the Ford Capri in second for looks.