Who cares about realism or whether or not they'd want us? This is about fantasy. Sheesh. Heh.
Well, I wouldn't want to date any of the women below (they're all much too old for me and I dunno if I'd like any of their personalities), but here are the ones I find the most visually attractive:
-Monica Bellucci
-Kate Winslet
-Audrey Tautou
-Kate Beckinsale (not out of character, just how she looks in "Van Helsing" and in "Underworld")
-Gong Li
-Rachel Brice (bellydancer)
-Alizee (I didn't know about her 'till this thread, but man, you guys are right, she IS hot)
-Eva Green
-Cecilia Cheung
-Jan Kurotaki (ditto)
-Zita Gorog (she had the uber-small role as Amelia in "Underworld")