Screen Encyclopedia on Instagram: "🎬 The Dark Knight (2008) Behind the Scenes The hospital explosion was done almost entirely with practical effects, not CGI. Heath Ledger was told the detonations would go off in a precise sequence, but when one charge appeared to delay, his confused reactions were completely improvised. Christopher Nolan loved it so much that he kept it in the final cut, turning a technical hiccup into one of the most iconic moments in cinema history. Follow @screen.encycloped