Brad Pitt and Cate Blanchett

Benjamin is such a unique character to transform into, but Brad says there was no big secret to becoming him. "There was a certain melody to the New Orleans accent that's real gorgeous," he says. "You just draw from people in your life."

Cate says she was able to draw from her personal experiences. "My first job was working in an old people's home," Cate says. "I love being around people who are older."