favorite actors/ directors
based on how many movies you've watched with him/her
How about instead of basing favorites on watch count you instead be able to rate actors/directors? You could have "Favorites" like what you have with tv shows and movie ratings now. Then have a "Most Watched" based on watch count.
That way it is closer to how tv/movies are setup now with "Most Watched" and "Favorites" on the profile page.
It would also be nice to be able see all the actors/directors you have seen, on a actor/director history page and ratings on a ratings page.
You could have the option in the drop-down on the history and ratings pages.
Except on the history and ratings pages when "All Types" drop-down is selected, it shouldn't show actors/directors to keep from cluttering basic history/ratings pages.
Ratings probably wouldn't suffer as much from clutter as history would.