Curiosity to see Ledger’s final performance will likely further stoke interest in the summer blockbuster. “Dark Knight” director Christopher Nolan said earlier this month that Ledger’s performance as the Joker would be wildly different than Jack Nicholson’s memorable turn in 1989’s “Batman.”“It was a very great challenge for Heath,” Nolan said. “He’s extremely original, extremely frightening, tremendously edgy. A very young character, a very anarchic presence that taps into a lot of our basic fears and panic.”
Ledger told The New York Times in a November interview that he “stressed out a little too much” during the Dylan film, and had trouble sleeping while portraying the Joker, whom he called a “psychopathic, mass-murdering, schizophrenic clown with zero empathy.”
“Last week I probably slept an average of two hours a night,” Ledger told the newspaper. “I couldn’t stop thinking. My body was exhausted, and my mind was still going.” He said he took two Ambien pills, which only worked for an hour, the paper said.