At Long Last Leave/References

Cultural references

 * The episode's name is a reference to the Cole Porter song "" and the film with.
 * As the family drive away from Springfield following their banishment, Lisa reads a book titled What to Expect When You're Ejected, a pun on the pregnancy guide What to Expect When You're Expecting.
 * Mad Max: The babies saying "Two babies enter, one baby leaves" is a reference to the quote from , "Two men enter, one man leaves".
 * The arcade game Pong '95 is seen in Barney's Bowlarama, a reference to .
 * The arcade game Grand Theft Walrus, a parody of , is also seen.
 * Homer finds a Braniff International Airways jet engine and attaches it to a quadbike.
 * The WikiLeaks headquarters is revealed to be in The Outlands. In real life, has no official headquarters.
 * Otto mentions.

Trivia

 * A parody of the opening sequence occurs after the Simpsons move to The Outlands:
 * "THE OUTLANDS" appears on the title screen, with the words sung in a stereotypical redneck accent accompanied by a fiddle.
 * The camera zooms in, panning over The Outlands. "THE OUTLANDS / Population: None of Your Damn Business!" is spray-painted on a wooden water tower.
 * Inside an abandoned building that resembles Springfield Elementary School, Bart spray-paints "I ♥ the breakdown of society" on the wall, then rides a motorcycle through the wall.
 * Bart takes a jump off the front steps and lands on a drunk holding a jug of moonshine, in the same place where Barney would be on the sidewalk.
 * Homer pulls up to the house on an ATV. Bart on his motorcycle takes another jump and bounces off the back of Homer's ATV.
 * Lisa and Maggie land next to the driveway in a homemade helicopter, narrowly missing Homer (and eliciting a "D'oh!" from him) as he gets off his ATV.
 * Marge pulls into the driveway in a horse-drawn shopping cart and hits Homer as he walks across the driveway.
 * The Simpsons take their seats on the couch and watch a fox sleeping on a rock. Homer complains, "I'm sick of watching Fox!"
 * Sideshow Mel's bone re-appears soon after he throws it at Homer.
 * Mel says the first bone was from his arm and a stitch is seen on him.
 * Bart calls his penis an "inchworm".

Continuity

 * This is the second time that Springfield has relocated, the first being "Trash of the Titans".
 * To make his case for banishing the Simpsons from Springfield, Mayor Quimby presents slides showing incidents they've caused, all of which occurred in previous episodes:
 * Homer driving his car down the hallway at Springfield Elementary School ("Wild Barts Can't Be Broken")—"Property Damage: $8.3 Million"
 * Bart surfing on a basketball backboard, riding a wave that resulted from his flooding the school gymnasium with water from a fire hose ("Brother's Little Helper")—"Upshot: 5 Mile Cloud of Toxic Mold"
 * Lisa coordinating the attempted rescue of Bluella ("The Squirt and the Whale")—"Not That Expensive but Pretty Annoying"
 * Grand Theft Walrus is seen again. (The Simpsons Movie)

Goofs

 * Alice Glick appears again, despite having died in "Replaceable You".
 * Louie's hair is light brown in one scene.
 * Raphael's seat in the town hall changes from one side of the room to the other.
 * Several coloring mistakes occur:
 * When the Simpsons enter town hall, Squeaky-Voiced Teen has Principal Skinner's colors.
 * When the police aim their guns at Marge and Homer, Mayor Quimby has Sanjay's colors.
 * In the panning shot of houses being built in the outlands, Kent Brockman has Rainier Wolfcastle's colors.
 * When the Simpsons are driving out of town, in one scene, Lisa's necklace is red, later, Bart's shirt is blue.
 * When the Simpsons are forced out of town on a float, Lisa's left eye turns yellow as the camera pans to Homer.