How do you get Brad Pitt, George Clooney and Matt Damon to join forces for a third Ocean's film? "Everyone thinks it's rocket science" to wrangle the superstar cast for the stylish heist movies, says Ocean's Thirteen producer Jerry Weintraub, "[but] we're all friends and we want to work together." In their latest outing (opening June 8), Clooney and Co. rob a casino run by Al Pacino and his right-hand woman Ellen Barkin. There were some other additions to the rat pack: New dads Damon, Pitt and Casey Affleck brought their kids on-set. "If we do another," says Weintraub, "there will be a nursery instead of a bar!"