'Titanic' director James Cameron explains why he had to convince Leonardo DiCaprio to appear in the movie James Cameron told Fox News Digital Leonardo DiCaprio almost passed on playing Jack Dawson in "Titanic" because he thought the role was too easy. NEW You can now listen to Fox News articles! Leonardo DiCaprio issued a warning to young actors as he explained why he turned down big paydays at the start of his storied career. DiCaprio, 51, claimed overexposure can be damaging to an aspiring