‘Batman’ turns 30: How a superfan got Hollywood to redefine the Dark Knight

(CNN)Three decades after director Tim Burton’s 1989 “Batman” film became a box office blockbuster and pop culture phenomenon, the decision to bring the Dark Knight to the big screen seems like it should have been a no-brainer. But in the years leading up to the film’s release, it was as hard to breach the barriers to Hollywood as it was to break into the Batcave.