Citroen C6 - amazing looking car that nobody will buy.

Alfa 159 - IMO better looking than the Brera (nice proportions)
Peugeout 1001 - not sure about that one.
I think a lot of the soft exotics (997, Gallardo, Maser 4200 etc) there are too many of them about because of the footballer status. They won't have the draw of a 930 Turbo, Espada in 30 years time).