42. Nicolas Cage
Nicolas Cage dropped out of high school at the age of 17. To make ends meet, he took up a job selling popcorn at a movie theater in Los Angeles.
He was actually casted in Fast Time at Ridgemont High immediately after dropping out but nearly all his scenes were cut from the movie. He thought that working in a movie theater would help his chances of landing another Hollywood role. It turned out, all he had to do was call his uncle, a famous Hollywood director by the name of Francis Ford Coppola.