Helen Keller! The Musical/Trivia

Continuity

 * In Rainforest Schmainforest, it's revealed while performing with the Getting Gay With Kids choir, that because he is Jewish, Kyle naturally has no musical rhythm. However, in both this episode and "Elementary School Musical" Kyle is shown to be able to perform elaborate dancing and singing combos.

Kenny's Death
When rehearsing the play, Cartman tries to rig a light so it falls and crushes Gobbles. However, he rigs the wrong light and it crushes Kenny.

Cultural References

 * The storyline of Timmy and Gobbles is similar to A Charlie Brown Christmas.
 * The scenes of Butters running down the hall is similar to scenes in The Right Stuff.
 * The title of the episode may be a reference to Cannibal! The Musical, which was also created by Trey Parker and Matt Stone. Another reference to Cannibal! The Musical are the fake beards that the children are forced to wear in their play.
 * The scene where Cartman follows Jeffrey Maynard's suggestion of using sensory deprivation to get inside the mind of Helen Keller, resulting in disturbing and apocalyptic images flooding Cartman's mind, bears much similarity to the sensory deprivation sequences in the Ken Russell film Altered States.
 * The final shot of Cartman's vision is from the movie Inseminoid.
 * Cartman makes a reference to Tim Rice writing the lyrics to "The Phantom of the Opera." However, these lyrics were written by Charles Hart and Richard Stilgoe.
 * The scene of the turkeys watching the movie before being killed is a reference to the euthanasia scene in Soylent Green.
 * Jeffrey Maynard resembles Colm Wilkinson in both voice and appearance. Colm Wilkinson played the lead in Les Misérables on Broadway. Most of Maynard's dialogue is sung to the tune of various songs from Les Misérables.
 * The scene where turkey is shot by hunters references to the James Caan's character Sonny's death in Godfather
 * First time we see Butters coming with news.
 * Cartman has a Mr. T. poster in his room.