Rachel Simmons offers a website, TV documentary, and a series of books about the way girls are taught behavior norms and thus "curtail their power and potential." Rachel is one of the nation's leading experts on the topic of girls' self image.
The New MacGuyver is a website to watch for new storylines, apps, TV, or other multimedia specifically directed to girls, engineering, and innovation. Even the concept of this show, and introducing it to students to "create" and "pitch" their own show about engineering with a female protagonist is an inspired assignment for any middle school teacher.
New Moon Magazine is an online and paper magazine for girls, by girls without advertisement. New Moon is appropriate for 4th grade and up with opportunities for publishing, and focuses on the authentic voice of girls themselves.
Smart Girls at the Party is web series about accomplished girls and women from Amy Poehler and Meredith Walker. Simply following their facebook feed offers great regular stories about successful girls who are following their own path.
Wings World Quest profiles of women doing "extreme" science such as studying volcanos or underwater caves. These extreme careers are excellent for breaking stereotypes of what kinds of science women can do.