When the Joker unleashes psychological warfare on Gotham City, Batman must cross his moral lines to prevent total civic collapse.
When the detonator misfired during the real hospital blast, Heath Ledger stayed in character, fiddling with the remote until it blew up behind him.
Ledger locked himself in a London hotel room for 6 weeks, filling a notebook with hyena laughter, unsettling drawings, and manic handwriting.
Nolan flipped an actual 18-wheel semi-truck vertically in downtown Chicago using a massive TNT piston under the trailer.
The interrogation scene redefined comic cinema: Batman and Joker aren't just foes; they are two sides of an eternal philosophical coin.
Heath Ledger won a posthumous Academy Award, forever etching The Dark Knight into film history.