Ask anyone to name their favorite acting performance in a superhero movie, and most will probably respond with Heath Ledger's Joker character in "The Dark Knight." Ledger, who died at 28 years old before the movie came out,

Everyone knows that of all the different takes we’ve seen on the superhero genre over the years, it was Heath Ledger ’s Joker that has gone down as one of, if not the absolute, best performances of all time.

Ledger's method acting in The Dark Knight resulted in a breathtaking performance, although it seemed to have taken a toll on his mental health. In his new book Don't Look Back, You'll Trip Over: My Guide to Life (via People ), Caine spoke about his relationship with the late actor. He mentioned his temperament, offering: