Medea.
Joan of Arc for riding naked on a horse. Even today, she is popular with movies like The Messenger. Runner up is Bo Derek, the perfect 10.
Joan of Arc riding naked on a horse?
I think you might mean Lady Godiva.
Joan of Arc would never have been so slutty.
My sexiest women: Marie Curie and Simone de Beauvoir. (Just to show that we don’t all look for the superficial qualities.)
La franchise ne consiste pas à dire tout ce que l’on pense, mais à penser tout ce que l’on dit.
H. de Livry
OK, howcum all the women in the other thread have been nominating SDMB guys as “Sexiest Man,” and none of you guys have mentioned us here?
Bastards.
I’m not sure she’s the sexiest of all time, but I’m gonna have to concur with Spiritus Mundi on Salma Hayak’s snake dance from “Dusk 'Til Dawn” being mighty fine.
That scene burned into my retinas. When I close my eyes I still see her. Which is why I’m always bumping into walls.
Real Posters…(in no particular order)
MoosieGirl
CanadianSue
Falcon
Zette
Kelli
Drain Bead
Flora
ValerieBlaise…( I know I didn’t spell it right)
Those are the ones that spring to mind immediatly…
All, right Flora. You’re pretty sexy for a plant. I usualy prefer fauna. And ooohhh, those lorgnettes!
While I’m here, I’ll name a couple others.
Melanie/SaxFace
elelle
Diane
And may I name one celeb? Tough, I will anyway. Sandra Bullock. Call me shallow, I don’t care.
“Some people are worried about the difference between right and wrong. I’m worried about the difference between wrong and fun.”
~P.J. O’Rourke~
Jeri Lynn Ryan - spoken like a true Trekie! 
I made a list!
Atrael…thank you. smooch
“There is no worse lie than a truth misunderstood by those who hear it.” - William James
Elizabeth Taylor (she once appeared on a cover of Ladies’ Home Journal–just her shoulders, neck, head, and an upraised arm appearing in the picture–and she looked far sexier than any of those women who appear in the Playboy centerfolds!! 
Debra Paget
Dolley Madison (wife of the 4th President and a celebrity in her own right)
Dagmar (TV celebrity of the early 50s)
Faye Emerson (ditto)
Jayne Mansfield
Loretta Swit (especially as Maj. Margaret Houlihan on MASH)*
Toni Tennille (and she’s 6 feet tall! I envy “The Captain”)
Dolly Parton (natch!)
::hands money over to Atrael::
Thanks for the mention! 
Some drink at the fountain of knowledge…others just gargle.
I’m so honoured to have made your harem list Atrael
I opened the door, and look who I found. Damn I’m good
Well, the criticism that no one on this board was mentioned in this thread was well-deserved, so I will include some nominations for the list, using one or more of the following criteria:
[ul][li]people whose posts have amused or amazed me[/li][li]people with pictures that make you say “what a beauty!”[/li][li]people that are nice and/or helpful[/li][li]people with cool usernames[/ul][/li]
I’m sure I’ve forgotten many people (which is why I don’t like making lists like this.)
neuro-trash grrl
catrandom
flora mcflimsey
michelle
orangecakes
catrimbaud
girl next door
majormd
drain bead
michelle
melin
but first place on my list, of course, is
my fiancée
Oh, UncaBeer, I know you just say that cause you like the way I undulate when I buuurrrpp…
Two more must mentions:
Marlene Dietrich
and her modern successoress-
Uma Thurman
Must say I’m pleased to see no mention of Madonna (Ciccione).
Bettie Page ( she isn’t JUST a centerfold…she did actually do some film work…hard to find, granted…)
Lauren Bacall
Katherine Hepburn
Audrey Hepburn
my friend Donna
Mom always said there’d be days like this…she just never said there’d be so MANY of them!!!
RuPaul
::She’s a what?::
Nevermind
Why thank you, Arnold, even given your somewhat free criteria
Catrandom, who never gets mentioned by nobody for nothin’
Wiggum- Hah!
Is anyone tallying? (Hell, no- not me!)
Additions- Jennifer Lopez- the way she talks, so silky… mmmm!
And this girl I’ve had some classes with who has that same way of talking, only more so. (If I could only ever talk to her…)
JMcC, San Francisco, JJM’s page from the Bay
If I were a baseball player, and I got beaned by a fastball, I wouldn’t want medical attention. I’d want my limp, lifeless body flung to 1st, cause, dammit, I earned it!
Holly Haahr, my french teacher: holhaahr@hotmail.com
Emma Thompson (especially in MUCH ADO ABOUT NOTHING)
Helena Bonham Carter
Although most of the sexiest women I can think of are ones I’ve had crushes on at one point or another; I can think of at least four (who I will resolutely refuse to name). There’s just something about a real live human being that no media creation can compare to.
Well, that and the fact that I have idiosyncratic/weird tastes in women (I’ve had a PLAYBOY subscription for donkey’s years, but all of those lounging pneumatic corn-fed blondes have all looked the same for the past six years or so – I have to check the cover to make sure it’s not the same bimbo as last time. Maybe Hefner’s cloning them?)
Anyway (back from Cuba!), let me also add Tanya Donelly (lead singer of the band Belly, now solo).
…but when you get blue, and you’ve lost all your dreams, there’s nothing like a campfire and a can of beans!