Bloopers & Behind The Scenes on Instagram: "During the filming of Harry Potter and the Chamber of Secrets, there’s a notorious behind-the-scenes moment involving Lucius Malfoy’s walking stick. In one take, Jason Isaacs — who plays Lucius — taps Harry with the serpent-headed cane as scripted, but the metal tip accidentally struck Daniel Radcliffe much harder than intended. The reaction you see on camera is a mix of acting and genuine surprise, and Isaacs has joked in interviews that he felt awful