The final song in the show refers to past events of the series: the "very mean crossing guard" from "Arthur vs. the Very Mean Crossing Guard," the comet that Buster discovered in "The Boy Who Cried Comet," and the blizzard that hit Elwood City in "The Blizzard." Although Buster says that he has a comet named after him, the comet was given a name in "The Boy Who Cried Comet."
Art Garfunkel makes another appearance in this episode. His last appearance, in which he was known as "the singing moose," was in "The Ballad of Buster Baxter."
Binky splits his pants again in this episode. The first time was in "Arthur's Underwear."
In this episode, we learn that Elwood City was founded by Jacob Katzenellenbogan.
As the musical begins, Prunella is shown handling the spotlights. She is a fourth-grader and shouldn't be involved with a third-grade musical.
Buster: (singing to the tune of Yankee Doodle) Dr. Ector came to Earth, in a flying saucer. Had a message to deliver, eh... ah... Be a frequent flosser! Floss your teeth every night, floss your teeth all day. If you floss your teeth with all your might, you won't have tooth decay!
This was the 100th episode and Elwood City turns 100 in this episode.
This episode has some similarities to the Season 1 episode "Francine Frensky, Superstar", including the whole concept of putting on a play, Buster taking his directing thing too seriously (in contrast to Francine taking her Edison role too seriously), various mishaps occuring during production of the play, and more.
Second apparance of Mr. Rogers (in cartoon form).
Larry King hosts the "A Word from Us Kids" segment along with the Arthur characters.
Previous guests such as Michelle Kwan, Yo-Yo Ma, Alex Lebeck, Marc Brown, and Mister Rodgers appear in the crowd.
This is the first of two two-part episodes in Season Seven, a new format for the Arthur series.
J.P. Morgan and Henry Ford were real life people. Henry Ford created Ford Motor Industry and J.P. Morgan created a stock company.
When that mole person's slow car skids to a stop for a duck, it makes the same tire squealing sound effect from The Flintstones!
The plot of this episode is similar to that of the movie Waiting for Guffman. In that movie a local troupe puts on a musical play to celebrate their city's anniversary, and the show also features a visit from a singing space alien.