My list, which I will complete later...

Audi Ur-Quattro (and other similar models like the "Coupé GT")
BMW 3er E36
BMW 6er E24
Chevrolet Caprice 1991-1992 (and the cars derived from it, Chevrolet Impala SS and Buick Roadmaster)
Citroën BX
Citroën DS/ID (19, 21, all actually)
Citroën SM
Citroën XM
Citroën C4 Coupé
Citroën C5 2004
Citroën C6
DeLorean DMC-12
Dodge Daytona 1984-1986
Ford Thunderbird 1961-1963
GMC Typhoon
Holden Commodore VT & VX
Honda Civic 1984 and the CRX of same era
Isuzu Impulse/Piazza
Jensen Interceptor
Lamborghini Countach
Lancia Delta
Lotus Esprit Turbo
Maserati Biturbo (all these models with square look, 222, 420, Karif, etc. including the 90's models a little less square)
Mega Track
Mercedes 300 SL Gullwing
Mercedes C Sportcoupé
Opel Calibra
Peugeot 205
Peugeot 206 SW
Peugeot 504
Porsche 928
Renault 4
Renault 5 (old and new)
Renault 16
Renault 17 (and 15, though I prefer the 17)
Renault Espace I
Saab 900 (old and new)
Saab 9000
Saab 9-3 (old and new)
Simca Vedette
Subaru SVX
Talbot Tagora
Tatra 603
Tatra 613
Volvo 480
Volvo 780
VW Corrado
VW Scirocco Mk2 (and Mk1 too actually)