Willard

My mom remembers seeing "Willard" when it first came out, and so she encouraged me to see it. It tells the story of Willard Stiles (Bruce Davison), an outcast who still lives with his mother Henrietta (Elsa Lanchester). But Willard discovers that their house has some other inhabitants: rats. He quickly befriends the critters, and then turns them into a sort of army who will obey all his commands. To add to this situation, Willard and his mother believed that his father died naturally, but it begins to look like Willard's boss Al Martin (Ernest Borgnine) may have been involved.

The old, dark house, and the young man living with his mother might bring to mind "Psycho", but "Willard" seems to me to be more of a story of an outcast taking revenge on the world that rejected him.