Adored by the Network: As of April 2020, British satelite channel Sky Cinema Disney is obsessed with airing this movie alongside Toy Story 4 and Mulan. On Easter 2020, it played twice (once in the morning and again in the evening), and it aired another time during the overnight hours.
Baby Name Trend Starter: The year before the movie was released, the name of the film's protagonist, Riley, was the 32nd most popular baby name for girls in the United States. After the film's release, the name jumped 20 places up on the chart to become the 12th most popular girl's name, and then became the 7th most popular baby name in 2016 after it was released to DVD and Blu-ray. In 2020, the name jumped to 3rd place, likely because of the launch of Disney+ boosting the film's popularity.
Beam Me Up, Scotty!: Bing Bong does not say "Take her to the moon for me, Joy." He actually says: "Take her to the moon for me, okay?".
Celebrity Voice Actor: In the French dub, actors (who don't primarily do dubbing) Charlotte Le Bon, Gilles Lellouche, Mélanie Laurent and Pierre Niney voiced Joy, Sadness, Disgust and Fear respectively.
Children Voicing Children: Rejected soundclips of Mary Gibbs' voice from Monsters, Inc., which were recorded when she was three or four, are used for any unintelligible sounds Riley makes during scenes featuring her as a toddler. Most notably, one of Boo's squeals from being used for the scream extractor in the scene where Sulley rescues Boo was used for the flashback of Riley squealing over being put in the car seat. The lines spoken in the sequence following the introduction of Riley's personality islands were also provided by an actual child whose name is unknown.
Colbert Bump: The film increased the popularity of the iPhone's "Popcorn" text tone, which was used on the phone of the imaginary boyfriend in the movie. Some fans have even set their ringtones to this tone.
Completely Different Title: Due to the idiomatic nature of the English title, the titles for foreign markets differ greatly:
Latin America: Intensa mente (literally "Intense-Mind", but it's a pun where the suffix -mente is used on adverbs. When combined as one word, it's literally "Intensely", but it could be interpreted as "Fiercely" or "Passionately").
Spain: Del revés ("Reverse").
Portugal and Brazil: Divertida Mente ("Fun Mind"; like with Latin America case, as one word means "Amusingly").
Russia: Головоломка (figuratively, "Puzzle" or literally, "Brain Breaker").
France: Vice-Versa.
Greece: "the brains you are carrying"
Quebec: Sens Dessus Dessous ("Topsy-Turvy").
Japan : インサイド・ヘッド ("Inside Head").
Israel: הקול בראש ("The Voice in the Head", but also a homophone of "It's All in Your Mind").
Germany: Alles Steht Kopf (literally "Everything's on its head", figuratively "Topsy-Turvy").
Polish: W głowie się nie mieści (Literally "Head can't contain it", but it's also an idiom for "unbelievable" or "inconceivable").
Danish: Inderst Inde (roughly "Deep Inside", but "inderst" refers to the very deepest you can go. The term is often used as an idiom for the core of your personality).
Taiwanese Chinese: 腦筋急轉彎 ("Riddles").
Cantonese: 玩轉腦朋友 (Literally "Fun with Brain Friends", but a pun is used here as "Brain" 腦 is pronounced the same as "Old" 老).
Vietnamese: Những mảnh ghép cảm xúc ("Puzzle pieces/Fragments of Emotions", but with "fragments" meaning "parts of a whole" instead of "broken pieces").
Two ad-libbed lines by Bill Hader and Mindy Kaling were of Fear declaring his love to Disgust ("I've always loved you!" "Ugh, I know."), but they weren't included as it distracted from the story.
In one deleted scene, Fear is in charge after Joy goes missing, which is even more stressful for all concerned because none of the other emotions have been in charge for long before. After things go awry, Fear announces that everything went well and he needs to go do something... which turns out to be screaming.
Fear: All right, back to work, everyone!
Died During Production: A sequel was announced in 2022. The Japanese voice of Joy, Yuko Takeuchi, committed suicide two years prior, so it's likely she will be replaced for the movie.
Distanced from Current Events: On March 22nd, 2016, Starz Kidz played a 2:00AM encore airing of a broadcast that had happened 5 hours prior. Right when it got to the part where Joy and Bing Bong fall in the memory dump, the Brussels attacks began. This caused Starz to limit airings of this movie across their networks.
In Memoriam: The film ends with the dedication to the memory of Brian Smits, who was a software engineer at Pixar.
Kids' Meal Toy: Subway sold a set of six tote bags; one with each of the Emotions separately, and one with them all together.
Method Acting: Kaitlyn Dias (Riley) revealed in an interview that while recording the scenes where Riley is crying, she was also crying as well in the recording studio. She would imagine her cat, May, dying to trigger an authentic emotional response.
One-Book Author: Yuko Takeuchi's only role in an animated work was voicing Joy in the Japanese dub.
A good number of people have been introduced to Boston's "More Than a Feeling" thanks to the second trailer.
The same thing, to far lesser extent, with Aerosmith's "Sweet Emotion".
Spread My Wings is more a case of "Introduction By Commercialization" —- the song was virtually unknown before being used in some of the trailers, including the first part of the trailer mentioned above.
In addition to movie itself, but one of the songs on the soundtrack ("Rainbow Flyer") shares a name with a track from beatmania and DanceDanceRevolution.
"The Bing Bong Song", weirdly enough, also shares a name with the favorite song of the titular character and her friends at preschool in Peppa Pig.
Troubled Production: Aside from the pressure of being Pixar's first attempt to get them out of theirAudience-Alienating Eranote which was light compared to the Audience-Alienating Eras from classic Disney animation and DreamWorks Animation, the latter of whom was faltering in the middle of one in the new 10's, which applied more pressure for Pixar to come through for the industry , the unique concept meant twice as much time spent on development. Production design alone lasted five years, the longest for designer Ralph Eggelston, and the emotions' distinct "grainy" surface texture was almost dropped because it was too difficult and expensive for just one character, let alone five. Towards the end of it, Pete Docter was seconds away from a nervous breakdown and quitting.
Word of God: Pete Doctor has confirmed that Riley having both male and female emotions does not mean the character was conceived as being gender fluid. He claims that the only reason the emotions are mixed-gender is because it was funny to him.
Write Who You Know: Riley and her experiences are based on Pete Docter's own daughter Elie (who played young Ellie in his last movie) and how, as soon as she reached age 11, went from being giggly and playful to quiet and introverted. According to Pete Docter, she did enjoy the film and found it touching.
Written by Cast Member: Amy Poehler (Joy) and Bill Hader (Fear) have received additional dialogue credit.
Miscellaneous
According to Word of God, Joy is 4'2 in relation to the environment of the Mind World. If she was scaled to an equal size in the human world (or, conversely, Riley in Headquarters as in the earliest idea), there's a chance that Riley would be One Head Taller than her, depending on how tall Riley actually is. Though in one of the film's earliest drafts Joy was small enough to sit on Riley's shoulder when she (Joy) did go "inside out".
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