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.