Great thread. I can't wait to read back over it.
I have many I'll be adding, but for now, off the top of my head who I would have loved to do porn:
Jamie Lee Curtis (immdiately after staring in John Carpenter's classic Halloween) through out the late '70s and earily '80s I love her look. I feel she's an underrated sex goddess. Well into the mid '90s before she got sadly haggered, I would have love to see her livin' in the valley and always taking cock with a smile. Look's like she would have been a fabulous pussy eater as well.
Anyone else agree? Her tits are legendary but check out her ass in those jeans in Halloween ('78). So underrated.
Jennifer Connelly (a no brainer, but from the late '80s onto maybe A Beautiful Mind time, at the height of her sensuality).
Debi-Sue Voorhees (a nice, cult film actress, best known for baring her tits and having the same last name as the legendary fictional serial killer, in Friday the 13th part V: A New Beginning).
More to come after while when I get home ...