Joker is already being hailed as one of the best films of the year. One of the most memorable scenes is when Arthur Fleck creepily dances in the bathroom as fluorescent lights flicker around. It's so perfectly orchestrated, it's almost hard to believe the moment was unscripted. Director Todd Phillips runs through the creation of the scene and how Hildur Guðnadóttir's haunting score inspired Joaquin Phoenix's performance. He also breaks down the movie's opening scene in this clip.