The first is on the "Rise of the female action film" inspired by the release of two female-headed action films on the same day: Underworld:Awakening and Haywire.
When you are done with that, check out the other post detailing a list of female characters you are likely to see in prime time for quite a while.
It's a little bit misleading to say that women starring on Television and in Movies is a recent phenomenon, because it ignores the contributions of women like Lucille Ball, Mary Tyler Moore, and, more recently, Tina Fey. But it is also undeniable that women are starting to get starring roles more often and that they are playing more nuanced roles.
I, for one, say bring on the ladies. The buddy comedy is a tired, pathetic imitation of itself (see The Hangover 2) and the male action flick is even more so (see The Expendables). I'm even more heartened by the recent news that Kristen Wiig is refusing to star in a Bridesmaids sequel. It seems that some women, unlike their male counterparts, know when to leave a good thing alone.