An actor who had to once sell his pet dog in order to eat, Sylvester Stallone has indeed come a long way. Today, he is worth more than $400 million, but he has accumulated this massive wealth through hard work and dedication. His Rocky and Rambo series are loved by all, and have allowed him to become the successful actor he is today. His action-packed movies have always been able to draw audiences to the theatre, making his movies very successful in the box office. It is no wonder, thus, that he has been able to make the kind of money that he has today.