While Homer is at Moe's, Kent Brockman announces a list of celebrities arrested that day. The list goes as follows:
::The Baldwin Brothers Gang - Dr. Brad Pitt - John John John Kennedy - George Burns - Infamous Amos - Grandson of Sam - The Artist Formerly Known As (Prince Symbol) - Tim Allen Jr. - Senator and Mrs. Dracula - The Artist Formerly Known As Buddy Hackett - Madonnabots, Series K - Sideshow Ralph Wiggum - Martha Hitler - Johnny Neutrino
This episode takes place in the year 2010, 15 years from 1995, when the episode aired. Unsurprisingly, however, mid to late Season 21 episodes have been set in 2010 like its broadcasting year (2009–2010) and so would early Season 22 episodes (2010–2011). This was also retconned by canon episode (Boy Meets Curl) set in the present where the Simpsons go to the 2010 Olympics. Also, it has passed 2010 and none of the technology like the hologram tree has actually been made (but in The Simpsons, nothing ages).
Maggie tries to speak twice, but is interrupted. Thus, the old Maggie never speaks. The only sounds we hear from her is mumbling, gasping, groaning and her clearing her throat.
Marge says that in England a mile is called a kilometer.
In the episode "The Way We Weren't" Homer talks about bad stuff he has done and remarks Like ruining Lisa's wedding in the future, even though Lisa was the only Simpson to witness the fortune. However, this future is still non-canon.
Bart has a Pirate Krusty tattoo on his right shoulder.
Bart reveals that he has been married twice in this episode.
In this episode an elderly Edna Krabappel is seen at Lisa's Wedding, but as of The Man Who Grew Too Much, Edna has passed away. This is non-canon, so that could be why. Just as well, this episode was made years before Edna was written out of the show following Marcia Wallace's death.
Marge says that in England a mile is called a kilometre but in the UK kilometres aren't used, miles are used.
When talking to Hugh's parents, Homer talks about the James Bondmovie Octopussy.
During a conversation between Miss Hoover and Principal Skinner, Miss Hoover mentions that Martin Prince died in a boiler explosion, but the scene immediately cuts to the basement of the school building where Martin Prince, dressed similarly to The Phantom Of The Opera (wearing a half-mask, fedora, cape and formal attire), remarks that he did not die, but states that "some days he wishes he had". The scene closes with Martin playing a remixed version of Beethoven's 5th Symphony on a synthesiser.
Several of the "futuristic" sound effects during the future sequence are taken from The Jetsons (such as the "flying car" sound) and Star Trek (such as the door-opening sound).