Alright, just to recap, here is our to-do list. With the first four items checked off, it was time to register with Central Casting. The next big movie you watch, check the credits. Chances are, Central Casting is listed; they are the most well-known background talent agency in the country. Background actors, also known as extras, are exactly what they sound like… they are all the people you see in a movie, but probably don’t notice. In fact, a background actor who draws attention is probably not doing the job right. And in places like L.A., the entertainment industry needs thousands of them. To register to work as an extra…