Horror films are notoriously hard to make, but “Misery” might be in a league of its own. For Caan’s part, the role required him to lie in bed for most of the 15-week shoot, which was extremely difficult for the active actor. Worse still, when one scene went wrong, Caan recalled, “All of God’s children got hurt,” meaning Caan himself, Bates, and the pig performer on set.