My girlfirend does regularly. Not usually on her first orgasm, though. Usually after she has had at least two, she will start to squirt on the ones after that. I love it...
I've been a lot of women but not one who's been able to squirt, either with me or on their own. I've heard people's stories, seen the videos but never experienced it.
I've always been curious as to where the fluid comes from. I'm thinking some of it has to come from the bladder. Where else would the body store that quantity of fluid.