See...I voted Willow...I liked Tara and thought she was very pretty and womanly, but in the end gotta go with the red head. I really don't think fred is sexy..she's very cute and Amy Acker is beautful, but I didn't get much in the way of sex appeal from her character.
If we're talking smart chicks, I think Buffy should be on the list too...Buffy proved herself to be an intelligent force on the show on many occassions. She's very smart, but due to her obligation as the slayer, didn't excel the way she should have. But she had the wit and common sense, not to mention tactical skills that made her the intelligent woman she was.