Ocean's 13 castmates Matt Damon, George Clooney, Julia Roberts and Don Cheadle are al part of the ONE campaign's new PSA. "This is a first step in a long-term effort to start making the fight against global AIDS and extreme poverty part of the election conversation, and Americans can be part of that by joining ONE.org," Matt Damon said of the ad. The celebs in the spot are shown patiently waiting their turn at a voting booth, although they're not supporting a particular candidate or political agenda - the ad hopes to raise awareness about ONE: The Campaign to Make Poverty History. Check it out: