Wow, this thread is confusing, between the discussion about being PC, and how many genders there are. I have no idea how many genders there are, but I think there are only two sexes. I view someone's sex, at least when nature gets it right, as female if they have two X chromosomes and male if they have an X and a Y. Their chromosomes are supposed to determine their physical characteristics, again, unless nature messes up.
To me, gender is different from sex, because gender involves an individual's belief that nature messed up by giving that individual the chromosomes and physical characteristics of the "opposite sex," or that nature got it right.
I don't really see gender as falling on a continuum, but I do see sexual preference as being on a continuum, with many of us falling close to the far points on the continuum. I identify myself as straight because the circumstances under which I think I would fall for a woman are so circumscribed that they are unlikely to occur.
As far as Joel Grey, to me the best thing about his coming out now is that it implies that he's still interested in sex at 82. As we all age, that's a message we need to hear.
Audrey, the Phantom Phanatic, who nonetheless would rather be Jean Valjean, who knew how to make lemonade out of lemons.