Games for Change - what games have changed

One of the meetings that I hope to go to next year is the Games for Change summit. Apparently a high-profile event with potential for good energy. At the center is an organization with the same name that seeks to be a "...global advocate for supporting and making games for social impact." See http://www.gamesforchange.org for more info. Through their newsletter I saw this really nice summary of some great things that games have done for society. It includes high impact testimonials from classrooms, the developing world, and research. They also provide video of the best talks from this year's event by world renowned game designer Jesse Schell, Valve Software’s Gabe Newell, Sheryl WuDunn’s conversation with Laura Pincus Hartman from Zynga.org and Pierre Guillaume Wielezynski from the UN World Food Programme, and US Department of Education’s James Shelton.