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
 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.