One of the more baffling moments in “Joker” finds Joaquin Phoenix’s Arthur Fleck coping with his violent descent into the eponymous villain by clearing out the contents of his refrigerator so that he can fit inside it. Arthur fits himself into the fridge and shuts the door behind him, as director Todd Phillips holds the shot for a couple extra seconds to show Arthur will remain inside the tight space for awhile. Phoenix’s refrigerator move was an improvisation that no one on the crew knew until the moment happened during filming, “Joker” cinematographer Lawrence Sherreveals in a new interview with /Film.