E3 isn't exactly a hotbed of activity for the non-profit sector, but in one of the halls sits a tent populated by men and women in uniform playing Guitar Hero. This is Pro Vs. Gi Joe, a 501c3 non-profit organization designed for keeping the military a bit more connected.

Pro Vs. Gi Joe has partnered with the U.S. to allow service men and women to compete against professional gamers via the Internet. They also invite the troops' families to look on via the Webcam. Pro Vs. GI Joe brings gaming to active military spots throughout the globe.

For more information on this unique organization, check out their site.