Ahhhh..., auto porn. Great thread.
Some I'd like to add:
1935 Duesenberg SJ Torpedo,
1968 Plymouth S/S Barracuda,
Cadillac 50
and if I had a gun to my head and Had To pick only one (and unless I missed it, I'm surprised I didn't see it in this thread), the 1966 Shelby Cobra Super Snake.
Also, really dig anything with heavy Art Deco influences like the Talbot and the Morgan previously posted.
and here's my honorable controversial mention - i absolutely adore the new MB E63 AMG Wagon - and it Blazes at nearly supercar speed
Oh yeah, here's a classic that to me also embodies beauty.... don't laugh... obviously personal reasons (no, not issues, reasons...

) and no, not mine...
umm.. Here's something to wash away the Forester taste for those that just got bummed out...
1937 Bugatti 57S Atlantic
good list here too..
http://www.automobilemag.com/features/news/25_most_beautiful_cars/
[I happen to be a big fan of Automobile magazine]