Longer list than expected...
1974 Ford Pinto wagon (no it didn't blow up, but neither would it go over 70 mph

)
1972 Plymouth Satelite (big, floppy boat of a car with a lovely design)
1982 VW Scirocco (fun, underpowered, poor interior quality)
1986 Acura Integra (great drivetrain, but generally dull)
1990 VW Corrado G60 (high emotional value, quite competant, hard to part with

)
2003 MINI Cooper S (yes, whoooeeee!)