The importance of the <popular movie person> mentioned in the movie preview is directly proportional to how good the movie is going to be. e.g., "From the director of Avatar..." is probably going to be a good movie. "From the sound editor of Forrest Gump" doesn't have quite the same chances.

I can't recall what movie it was, but I once saw a trailer that touted itself as "from the company that distributed <not very good movie>." The movie proved to be terrible.

My impression is that serial entrepreneurs do get such credit, c.f. Jim Clark in the Netscape days