Tough choice. Settled on Aeryn, Amy and Jessica H. No Willow as she's incredibly, awesomely cute rather than sexy.
Number Six would have been a contender, but her image is too overtly manufactured. Almost chose Anya, but like Willow she's awesome in a not-necessarily-sexy way.
Notable omission: Emma Frost (comics version, of course.) Way sexier than Jean and a much better pairing with Cyclops.
Dudes (WTH, why not?): Aragorn, Crichton and Stark would be my man-crushes.
Edit: No Bill Adama? How do they expect to be taken seriously?