There's a NY Times article about the lack of women in computer science. It's a good (though short) survey of some of the literature on this topic and emphasizes something I frequently forget - in the early 1980s there were almost as many women entering computer science as men. Yet another counter-argument for those who believe women aren't in computer science because we can't handle it or just don't have the "intrinsic aptitude" for science.
One thing I think the article missed in its emphasis on the hypothesis that gaming as a guy's thing drives away women's interest in the field is the use of the computer as a communication tool. (Because we all know women like to communicate more than men.) It seems that instead of trying to come up with some game that will make girls think gaming isn't only a guy's thing it would be more productive to emphasize the communication aspects of computing and link those to computer science.
Also, the article was in the business section. To me, that seems appropriate.