Personally, I nominate the '38 Talbot Lago T150C Teardrop Coupe.
The Ferrari 250GTO comes at a close second, though...
and for something more modern, the F-Type R-Coupe.
This is to heal the wounds caused by last night's thread. However, since beauty is very much in the eye of the beholder, a winner shall not be determined.
P. S., E-Type porn much welcomed.