George Clooney, Brad Pitt and other stars of "Ocean's Thirteen" have agreed to use the light-hearted caper film to call attention to a more serious cause - the genocide in Sudan's western Darfur region. Clooney, Pitt, Matt Damon and Don Cheadle along with producer Jerry Weintraub are using events surrounding the movie's premiere next month to promote their Web site, www.notonourwatchproject.org., which is partnering with the International Rescue Committee to raise funds to aid the hundreds of thousands of people uprooted by the Darfur conflict. "All the guys have been to the Sudan this year. They saw this huge genocide and nobody doing anything about it," Weintraub said in an interview Thursday. "Clooney got attention earlier, but it faded. "What we are trying to do here is bring our celebrity to raise money and bring a spotlight on Sudan again. We decided to dedicate ourselves to this. The thing I am most proud of by far is that these events will benefit a cause that is very important to me and my colleagues."