If you’ve seen Christopher Nolan’s Batman Begins, you probably remember the great scene where Bruce Wayne (Christian Bale) and Ducard (Liam Neeson) fight on a frozen lake. But did you know that all throughout the day Bale and Neeson shot this scene, they could hear cracks in the ice beneath their feet? When the crew returned to the lake the next day, the entire thing had thawed. Yikes. That’s just one of the facts featured in the newest episode of You Think You Know Movies!