During Mitch Conner's flashback of the Vietnam War at the beginning of the episode, "Time of the Season" by English rock group the Zombies plays in the background. The scenes between Cartman and Scott Tenorman closely mirror a scene from the 1988 graphic novel Batman: The Killing Joke where the Joker tortures and taunts Commissioner Gordon. Mecha-Streisand is defeated by her inability to resist performing duets with Neil Diamond, a pop singer-songwriter. During one scene, Mecha-Streisand crushes a building and someone screams, "The Casa Bonita is gone!" This is the name of a real-life restaurant that had been seen in the episode "Casa Bonita", and after which Parker and Stone's production facility was named.