Filmstract on Instagram: "The Joker’s chaos, captured perfectly in a single shot. To prepare for the role, Heath Ledger isolated himself in a hotel room for weeks, keeping a handwritten “Joker diary” filled with images, notes, and clippings as he explored the character’s psyche. He shaped the voice and laugh from that darkness and drew inspiration from Alex DeLarge in ‘A Clockwork Orange’. 🎥: The Dark Knight (2008)"