Broken Aesop: The closing monologue would frequently say that a character who seems to not be punished in-story was later put in prison or executed. But in "Behind the Locked Door" and "An Out for Oscar", the 'murder' is the Karmic Death of an actual murderer who was not otherwise punished for their crime, and the 'murderers' did nothing illegal.
Hollywood Homely: In "Behind the Locked Door," Bonnie (Lynn Loring) says that her parents thought she wasn't beautiful, but her new husband says he thinks she is. After she dies, he looks at a picture of her and says she really was "plain as paper." Viewers might disagree.
Memetic Mutation: The "Good evening" opening with Hitchcock's profile has been parodied countless times.
The theme song is also pretty popular amongst cs188 followers due to its usage in several of his poops.