acting career - What process does a production company have to go through in order to obtain a 'high profile' actor/actress?

I realize this is an old question, but I randomly came across it and thought I could help out.

Look up what movies this person has done in the past, and contact the casting director from some of those movies. They usually have great relationships with talent and their management. Hire the casting director that can get you the connection.

It also helps to present a very professional front, with the material you are trying to get them interested in, to their management. Management is usually the best way to go, as agents are cool people and all, but their job is to work the deals: money, benefits, all that. Management is going to have a much more personal relationship with the client. You can look up management info all day long on IMDBPro.

Also, be prepared with an offer. Actors like to act, but they don't like to work for free. The price has to be right.