This summer's testosterone-fueled hit movie, The Avengers, was mostly all about the guys (Iron Man, Captain America, Hulk, Thor, Hawkeye, Loki, Nick Fury) with only one female superhero (Black Widow) and S.H.I.E.L.D. agent Maria Hill (and let's not forget Pepper Potts) to add a feminine touch to this past summer's tentpole. But what if some of the male characters had been played by actresses instead?