Corrected entry: Not sure of the episode name, but the episode where Mojo, Him, and 2 other villains join forces, absolutely everything in the episode refers to The Beatles, from what they call themselves to song references to quotes. One example is when they are taking several pictures: this references to the cover of "A Hard Day's Night."
The Powerpuff Girls (1998)
1 corrected entry in show generally
Starring: Tara Strong, Tom Kenny, Elizabeth Daily, Cathy Cavadini
The Powerpuff Girls Best Rainy Day Adventure Ever / Just Desserts - S2-E10
Plot hole: I don't think the police would throw the wife and children in the same jail cell as Harold.
More quotes from The Powerpuff Girls
Boogie Frights / Abracadaver - S1-E5
Trivia: The scene of the Powerpuffs flying along the disco ball is parodied of a scene of Star Wars (episode IV). Note the PPGs having to shoot one area to explode the ball.
Question: How does the city of Townsville get put back together each time after it gets destroyed? Does it magically repair itself?
Answer: This show is a highly stylized satire of superhero tales, and as such there is never an explanation how Townsville is repaired after all the destruction. There is similarly never any real explanation how Metropolis is put back together after Superman fights a bad guy. Powerpuff Girls takes this concept to the extreme to point out the absurdity of mainstream superhero stories.
Correction: The episode is called "The Beat-alls", and is an obvious parody/homage to the Beatles. This isn't really trivia as it's obvious to anyone watching the episode.