Good Neighbor Sam (1964)

Good Neighbor Sam is a comedic film about a graphic artist named Sam Bissell who gets caught up in a series of misunderstandings and mistaken identities when he agrees to pose as the husband of a friend's wife. As Sam becomes more entangled in the situation, he must navigate the challenges of a domineering mother, a suspicious private investigator, and a blackmail scheme, all while trying to save his job and his marriage. Set in San Francisco, this satire-comedy explores themes of infidelity, friendship, and the complexities of modern relationships.