I am a fan of coupes, but i have noticed several new and not-so-new 4-door sedans that look(ed) great, and always thought "man, i wish they made a sporty 2-dr version of that..."
Here's my list of cars i'd love to (have) see
in a 2-dr/coupe version:
1st Gen Olds Aurora v8 (probably my all time fav. of good looking 4 dr sedans)
Mazda Millenia S (1st and 2nd gen)
Mazda 6
Audi A4 and A6 and A8
1994-1996 Chevy Impala
Nissan Maxima up to 2002 or so (before the bloated remodel)
Hyundai Sonata ???
Ford Fusion ???
Here's my list of cars i'd love to (have) see

1st Gen Olds Aurora v8 (probably my all time fav. of good looking 4 dr sedans)
Mazda Millenia S (1st and 2nd gen)
Mazda 6
Audi A4 and A6 and A8
1994-1996 Chevy Impala
Nissan Maxima up to 2002 or so (before the bloated remodel)
Hyundai Sonata ???
Ford Fusion ???