3 films match Starman

An alien takes the form of a young widow's husband and asks her to drive him from Wisconsin to Arizona. The government tries to stop them. (imdb)

An alien returns to Earth years after an earlier visit to reunite with his Earth son and together, they search for the alien's human wife. (imdb)

Super criminals are planning to infiltrate Earth with mass nuclear destruction! Only Starman can defend civilization by thwarting evil! (imdb)