For those who don’t recall, the sequence in question here comes from the first task in the tri-wizard tournament in Harry Potter and the Goblet of Fire. Along with the other wizards in the competition, Harry is flying on his broom above Hogwarts, and he is surprised when a dragon flies up from below him. He is knocked from his ride and does a slide down the roof that leaves him clinging to the building for his life. You can watch it in the clip below (you’ll find the stunt at the 2:40 mark in the video)