Some cars I really really really like:
BMW E39S M5 or (since they didn't make an E39S M5 wagon) 540i Touring
Audi Sport quattro (short Urquattro)
'68-'70 Charger
'67/'68 Mustang Fastback
Mercedes 300 SL Gullwing
Volvo P1800ES
The list can go on forever, but that's my shortlist really.
If the list is extended to bikes, I'd like to add a Ducati 996/998 but I don't even have a driver's license for a bike...