The children in the band seen at 15 seconds in are also sitting in the bleachers.
At the end of the episode when the bus begins to fall off the bridge backwards, Otto makes a reference to the 2010 film "Inception", when he says, "Maybe it'll fall into the water slowly like in Inception."
In the hidden classroom, there's a poster at the lounge section that has the Element symbols of Water, Earth, Air and Fire from Avatar: The Last Airbender
Near the end of the episode Cregg Demon mentions he was going "to go back to Canada and run for Parliament". Ironically, when this episode first aired Canadian politicians were in the middle of a federal elections campaign. The writers could also be mocking Canadian Liberal Party Prime Ministerial candidate Michael Ignatieff, who had not lived in Canada for decades before returning in 2005 due to the possibility that he could become the Prime Minister. He is currently running in the 2011 election.
The fictitious name Ima Wiener that Bart texted to Moe with a cell phone in a prank call is in fact the same prank name that Bart used against Russ Cargill in "The Simpsons Movie".
Walter Hotenhoffer claims to be Augustus Gloop of 'Charlie and the Chocolate Factory'.
The song played when Marge and Homer kiss at the end is an instrumental version of "L'amour est bleu", originally recorded by greek singer Vicky Leandros in 1967.
This episode shows Patty is really a redhead and Selma is a blonde.
After watching the TV show Homer raves about the various producers and especially praises the "Consulting Producer" and during the opening credits (in the hammock scene) it is shown that Dan Castellaneta (who voices Homer) is the Consulting Producer for the show.
Mr. Burns' full name is revealed in this episode to be - Charles Montgomery Plantagenet Schicklgruber Burns.
The song played during the love scenes and the credits is "Jennifer Juniper" by Donovan.
The late shift workers that Homer, Lenny, and Carl fight with have a similar appearance to each of them, with only a few minor differences in their appearance. (ex. different hair styles and glasses)
The song played during the "shift" fight was "Sing, Sing, Sing" by Benny Goodman.
Mr. Burns' name includes "Schicklgruber", which was Adolf Hitler's original family name.
When Jimbo's hat falls off we see that he was bald on the top of his head. But in previous episodes when we see him with his hat off, he had a full head of hair.
When this episode is rerun, the helicopter with the funny slogan in the opening title sequence is replaced by King Kong Homer climbing the Empire State Building and grabbing the three-eyed crow as he wards off a biplane.
The giant dome which Mr. Burns was going to cover Springfield and Lenny said "It's been done" is from "The Simpsons Movie".
When Lisa takes Nelson to the convention, he is seen wearing a blue shirt with a pocket in the front, but when Nelson begins playing Chicken with the Billionaires, he is wearing his normal clothes.
According to this episode Nelson's middle name is Mandela.
Grampa already gave Homer and the family their inheritance once before in the season 5 episode "Lisa vs. Malibu Stacy."