The Dark Knight: Christopher Nolan's Hidden Details You Never Noticed

The Dark Knight transcended superhero cinema. Nolan's attention to detail and Ledger's performance created a masterpiece.

• Heath Ledger locked himself in a hotel room for a month to develop the Joker
• The hospital explosion was real - One take, no CGI
• Joker's scars story changes every time - Symbolizes his unreliable nature
• The Joker card at the end of Batman Begins wasn't planned for The Dark Knight
• Heath Ledger kept a Joker diary with clown makeup on random pages
• Christian Bale lost his voice permanently from Batman voice
• The semi-truck flip was practical - No CGI
• Maggie Gyllenhaal replaced Katie Holmes - Nobody noticed in-universe

Heath Ledger didn't play the Joker. He became him. And it changed cinema forever.