To Courier with Love/References

Cultural references

 * In the "Dawn of Time" segment:
 * There is a skull in the cave.
 * Homer's hammock is a pelt.
 * The art Maggie is putting on the wall is one of the cave paintings.
 * The title of the episode is a reference to the title of the film .
 * The film has also been referenced in the title of the episodes "To Surveil with Love" from Season 21 and "To Cur, with Love" from Season 24.
 * Homer rides on a luggage carrier with four . He shows them a video of the Springfield Tire Fire, and they react in horror, being made of tires themselves.
 * Homer mentions Burger King.
 * Homer refers to his good luck saying "Fortune favors the bald," a play on the proverb "."
 * Strolling along the Seine with Marge, Homer says "Plastered in Paris, there's no better feeling" a play on 
 * The scene where Homer and Marge stroll past the "Place de la Pointillisme" is drawn in the art style of.
 * A vehicle is found by Lisa and Homer in the garage.
 * Jay Leno, who buys the car from Homer, is well-known as a.
 * The is shown.
 * Runway models, known for being extremely thin, are here shown in side view as being thin as playing cards and they act like playing cards, even themselves.
 * The house from  is seen flying in Paris.
 * In Paris, Lisa is dressed as Madeline, a character from a French book and TV series .
 * Homer, when talking to a policeman, states that "our family is falling apart like your European Union". This is clearly a reference to the, the British EU Membership Referendum, in which the UK voted to leave the.

Continuity

 * Ugolin and Cesar appear. ("The Crepes of Wrath")
 * The Simpsons family travels on an Air Springfield airplane. ("Fear of Flying")
 * Marge mentions bad journeys of the Simpsons family:
 * Australia ("Bart vs. Australia"),
 * Brazil ("Blame It on Lisa", "You Don't Have to Live Like a Referee"),
 * Japan ("Thirty Minutes Over Tokyo"),
 * London ("The Regina Monologues"),
 * China ("Goo Goo Gai Pan"),
 * World's Fair Bart drove to ("Bart on the Road"),
 * That place with the underground jockeys ("Saddlesore Galactica"),
 * Itchy & Scratchy Land ("Itchy & Scratchy Land"),
 * Outer Space ("Deep Space Homer").

Trivia

 * The Duff blimp in the couch gag says Season 27 ep. 20, the season and episode number of this episode.
 * French versions of Chief Wiggum, Eddie and Lou appear.

Goofs

 * Lisa's headphones disappear on the plane.
 * At the airport, there's a gate "E33", but there's no "E33" gate on the, the airport used as inspiration for it.
 * A poster in the travel agent's office is titled "", but the picture is of the landmark in Reykjavík: perhaps knowingly done, as Kaflavik has no landmarks of its own but relates to a word spoken by Professor Frink.
 * When the Simpson family arrives at the airport they are in the departure lounge.
 * The plane seating plan is not used on any plane.
 * It would be impossible to get a live snake through security.