From "http://api.themoviedb.org/3/movie/422/casts", we get the abbreviated response...

{'cast': [...], 'crew': [{'department': 'Directing', 'id': 4415, 'job': 'Director', 'name': 'Federico Fellini', 'profile_path': '/z90Xi07Ywtkyp5GTL2ahFZiY0Ru.jpg'}, ...., {'department': 'Camera', 'id': 5680, 'job': 'Director of Photography', 'name': 'Gianni Di Venanzo', 'profile_path': None}, ...], 'id': 422}

If I had to guess, I would say the grabber on the WDTV was just grabbing someone whose job started with the string 'Director'. This would be a flaw in your WDTV, and not something we could help you with here.