The MetaZ defaults for the "Artist (Show)" field is populated with the cast "Actors" under the video tab. iTunes then shows this as "Director" under the "Details" tab of "Movie Info." I would like to recommend that you change the "Artist" field with the same information as the "Director" field.
I second that. All the actors listed are inserted in the Artist field, and as a result there is a huge list of people in the Directors field in iTunes.
The MetaZ defaults for the "Artist (Show)" field is populated with the cast "Actors" under the video tab. iTunes then shows this as "Director" under the "Details" tab of "Movie Info." I would like to recommend that you change the "Artist" field with the same information as the "Director" field.