At the end of the wedding video, Homer and Marge dance to the song "Close to You" by The Carpenters. On The Simpsons (1989), this is the same song that is played in a flashback scene where Homer sees Marge for the very first time.
When the Simpsons arrive in Alaska, the border guard gives them $1000 in exchange for the mining of Alaska's natural resources. In fact, this actually happens, though a citizen has to reside there for at least 12 months first. The Alaska Permanent Fund which is funded by oil production and revenue from other sources pays out an annual dividend to every eligible Alaskan resident. When it began in 1982, Alaskans were paid $1000. The amount varies from year to year based on the growth of the fund.
Release prints were delivered to theaters with the fake title "Yellow Harvest". This was also used as a fake working title. It references "Blue Harvest", the fake working title of Star Wars: Episode VI - Return of the Jedi (1983).
Marvel Comics actually published a comic book series based on a pig version of Spider-Man in the early 1980s. It was called 'Peter Porker, the Spectacular Spider-Ham' and featured animal versions of other Marvel Comics characters.
The Simpson's movie debuted in Springfield, Vermont on 21st July 2007. 20th Century Fox held a contest to select 1 of 16 possible Springfields (spanning from Oregon to Nebraska to Massachusetts) to decide which city would host the premiere. Springfield, Vermont won, just beating out Springfield, Illinois.
Two versions were filmed of the scene in which Homer slides into the domed-off Springfield down the bomb rope, knocking people off of it - one was done from Homer's perspective, and another was done from a third-person perspective, showing a side view of Homer coming down the rope. Although the latter scene was used for the final version of the film, the former appeared in theatrical trailers and TV spots.
For the entire month of July 2007, as part of a campaign to hype the July 27th opening of the movie, 12 "7-Elevens" stores all over North America changed their names to Kwik-E-Marts, and begun selling products like Buzz Cola, KrustyO's cereal, Radioactive Man comics, and Squishees - including WooHoo! Blue Vanilla flavor. One store in Burbank, CA reported selling over 57,000 sprinkled donuts matching the one featured in the movie poster. Only 1 of the 12 locations was in Canada - located in Coquitlam, British Columbia (a suburb near Vancouver).
In one scene, Comic Book Guy claims that "EPA" was the sound made by Green Lantern when Sinestro threw him into a vat of acid. Geoff Johns, writer of the Green lantern comic book at the time, was a big fan of this film, and worked in "EPA" as a sound effect in the fiftieth issue of the fourth volume, fittingly during a battle between GL and Sinestro.
The sign in Russian, in the scene where Homer tells the family to "believe in America" and pulls aside the curtains in their hotel room, reads "Learn to Speak English or Get Out". The Japanese sign reads "Godzilla Motors". The Greek sign reads "Dimitri's Super Gyros-Souvlaki".
'Spiderpig' by Hans Zimmer reached #3 after climbing from the 20s in the Irish Music Charts. At just over a minute it is the shortest track ever to make it in to the Irish Music Charts. In the UK it got as far as the Top 20.
According to the DVD commentary, virtually none of the gags from the original draft (written around 2003) made it to the final cut. One of the few exceptions was the fishing scene between Homer and Bart.
The character of Russ Cargill went through two different designs. Burger King, which licensed the right to make give away figurines of the characters, had started making figures of the rejected design when the change was made for the movie. Also, a number of mutated animals were considered for use, including a four eyed deer and five eyed raccoon, when it was decided to use a multi eyed squirrel as the result of Springfield Lake's pollution. However, the five eyed raccoon was included on the BK Marge Simpson figurine.
The tilt-rotor aircraft depositing the giant dome over Springfield are drawn in a style clearly reminiscent of famed Japanese writer/director Hayao Miyazaki, whose fascination with aircraft is a director's trademark.
A 180ft doughnut-brandishing Homer Simpson was painted next to the Cerne Abbas chalk giant on the hill above Cerne Abbas, Dorset, UK, to promote this film. Pagans pledged to perform "rain magic" to wash away the image, which was created with biodegradable paint that would wash away as soon as it rained.
Although Julie Kavner is credited for providing the voices of Marge, Patty and Selma, only Marge has a speaking role in the final film. In addition, Marcia Wallace is credited as Mrs. Krabappel, but she has no dialogue. A scene with Patty, Selma and Mrs. Krabappel speaking can be seen as a deleted scene on the DVD.
The trivia items below may give away important plot points.
The first new episode of the series broadcast after the release of the movie featured an altered opening credit sequence which included a number of references to the movie including Bart skateboarding through a destroyed Springfield, the multi-eyed squirrel, Russ Cargill, President Schwartzeneger, the Simpson's home in the process of being rebuilt, and Homer pulling into the driveway with the silo strapped to the roof of his car. The couch gag featured Spiderpig/Harry Plopper sitting on the couch, waiting for them. Homer cuddles him and says, "Ah, my summer love!"
Marge claims that "sequel" is Maggie's first word during the end credits, which is not true. Maggie said her first word in The Simpsons: Lisa's First Word (1992), and it was "Daddy". But since no one was around when she did say it, it is only natural that Marge assumes that her daughter's first word is "sequel".
Homer also tried to jump the "Springfield Gorge" in The Simpsons: Bart the Daredevil (1990). The ambulance used to transport Homer to the hospital can still be seen sitting where it collided with a nearby tree.