Retro Head Cinema on Instagram: "In one of the most iconic scenes in modern cinema, the hospital explosion sequence showcases the Joker’s complete embrace of chaos. Shot practically with real explosives, the scene was meticulously planned and executed in a single take, capturing both the unpredictability of the character and the realism that defined Christopher Nolan’s approach. Heath Ledger’s improvised gestures — especially his playful reaction to the delayed detonation — became legendary, per