Most of the footsteps you hear in movies were faked. After filming wraps, someone watches the scene on a screen and walks in place in a tiny studio, matching every step the actor takes. The man that job is named after walked an estimated 5,000 miles that way without ever leaving the room. His name was Jack Foley, and he got the job by accident. Back in 1928, Universal finished a musical called Show Boat as a silent film, right as talkies were taking over. Suddenly the studio had a finished…