Here's a really awesome letter to Pixar asking them to write some cool lead girls in their next movies
A couple of excerpts (but there are other great quotes in there):
Of the ten movies you've released so far, ten of them have central characters who are boys or men, or who are anthropomorphized animals or robots or bugs who are voiced by and imagined as boys or men. These movies feature women and girls to varying degrees -- The Incredibles, in particular -- but the story is never "a girl and the things that happen to her," the way it's "a boy and what happens to him."
I want so much for girls to have a movie like Up that is about someone they can dress up as for Halloween, as Anika Noni Rose said about starring as the voice in The Frog Princess. Not a girl who's a side dish, but a girl who's the big draw.
And I'd really, really like it not to be a princess.
And even many of them who do aspire to be princesses are mixing their princess tendencies with all manner of other delicious things. Their tiaras fall off when they skin their knees running at top speed; they get fingerpaint on their pink dresses; they chip their front teeth chasing each other in plastic high-heeled shoes.
There's nothing wrong with the movies you're making; I'm sure your princess movie will be my favorite one ever. I'm just saying, keep them in mind, those girls in Band-Aids, because they want to see themselves on screen doing death-defying stunts, too. You're making some of my favorite movies in the whole world right now.
Please, please make one about a girl who isn't a princess.