2. Johnny Cash - 'Hurt'
Trent Reznor remembers the first time he saw the video for Johnny Cash's cover of his 1994 song "Hurt." "Tears started welling up," he said. "I realized it wasn't really my song anymore. It just gave me goose bumps up and down my spine. It's an unbelievably powerful piece of work. After he passed away I remember feeling saddened, but being honored to have framed the end of his life in something that is very tasteful."