Gender field

As you've probably noticed, the default gender field on the profile only provided the option of the two binary genders. This is not sufficient to represent the reality of the world we live in so I've added a space for non-binary genders as well.

Right now the options are:
Non-binary
Gender fluid
Agender/gender neutral
And other/choose not to say

It occurs to me just now, I probably should add an option for intersex folks as well, but are there any options I should make available?