Acting as a career involves more than just performing in movies. Working actors perform in live theater productions, at theme parks, in commercials and on television shows. As actors start their careers, many work multiple jobs, such as working as extras in films or TV, to support themselves financially. While many actors live in large metropolitan areas, such as Los Angeles or New York, production companies all over the U.S. hire actors on a regular basis. Travel is often necessary, and competition for acting positions is extremely keen.