How do you get Paul McCartney into your movie? Just have Johnny Depp text him. Depp had the musician's number and the two exchanged a series of text messages that, according to the directors, got "more pirate-y" as it went on. McCartney agreed to be in the film, and those who see it this weekend shouldn't have a hard time spotting him. At one point in the film, Jack Sparrow is in a jail cell, where he comes face to face with another pirate prisoner (McCartney). He's playing a card game and singing a shanty to himself, and we quickly learn that this is Jack's uncle -- also named Jack.