Some items seen in the library are Everybody Poops: The Video, Yu-Gi-Oh! Price Guides, and Itchy & Scratchy books on tape.
Henry wipes his mouth with the Magna Carta, an important document in the 1200s. This is not the only time that Homer wipes his mouth with an important document, as he also does so with the sacred parchment at a meeting of the secret Stonecutters society in Homer the Great. In Make Room for Lisa, he licks the Eighth Amendment off the Bill of Rights.
Homer says to Bart in his dream to "get out of my dreams and into my wife", a reference to the song, "Get Outta My Dreams, and into My Car", which in turn was inspired by a line in the song You're Sixteen.
Homer sings a variation of "I'm Henery the Eighth, I Am".
Marge says that one of the good things about Elizabeth I's reign is the fact that it gives various British actresses a chance to play her when they reach a certain age, a reference to the frequent portrayals of Elizabeth in film and television by famous actresses such as Glenda Jackson, Helen Mirren and Judi Dench.
The music in Bart's opera is in fact Mozart's "Eine Kleine Nachtmusik" with lyrics referring to flatulence. However, "Eine Kleine Nachtmusik" is a serenade, not an opera.
The three untalented brothers of Antonio and Mozart are Randy, Jermaine, and Tito, three members from the Jackson Five.
Reverend Lovejoy says, "In the name of Henry, the Hank and the holy Harry." The latter two are references to cast members Hank Azaria and Harry Shearer.
The theme of a hard working but undervalued person seeking revenge against a successful but undeserving person was last used in Homer's Enemy.
Moe's Tavern blows away like Dorothy's House in the Wizard of Oz. Also, he says that he built the bar in Kansas, which is where Dorothy lived.
Henry is portrayed in this episode as having no sons, only daughters. In real life, Henry VIII had two sons: the illegitimate Henry Fitzroy, born from his mistress, Bessie Blount; and King Edward VI, born from Jane Seymour, Henry's third wife. She was also considered Henry's favorite wife for this reason.
It also shows Henry executing all but his first wife; in reality only the second and the fifth were executed. They were Anne Boleyn and Catherine Howard, who were both executed on charges of adultery, which was considered at the time treason for a queen.
Marge explains how Elizabeth I eventually became queen and that England's power was never greater; in fact, England reached its greatest power about four centuries later as the British Empire. The true order of succession after Henry's death was Edward VI; Lady Jane Grey, who was named in order to keep the Catholic Mary from bringing Catholicism back to England; Mary, who usurped the throne and had Jane executed; and finally Elizabeth, after Mary died childless.
In the Mozart segment, when Salieri enters the asylum, Crazy Cat Lady can be seen and heard.
According to the Itchy and Scratchy poster, it airs Tuesdays on Channel 6.