Inside Out Trivia

Cameos, in-jokes, re-used animation and other trivia from Inside Out.

Cameos

 * A113 is visible as a grafitti on a background wall when Riley receives a phone call from her mother. Also, according to CinemaBlend, Pete Docter has said that Riley's classroom in her new school is room A113.
 * The Luxo Ball appears in Riley's house in Minnesota in one of the flashbacks of Riley playing tag with Bing Bong.
 * Director Pete Docter has confirmed that the Pizza Planet Truck appears three times in the film, but also said that it is very hard to see. According to Victor Navone's wife on Twitter, it is in the background of China Town and San Francisco.
 * The Pizza Planet Truck appears in a golden memory orb that briefly shows up in the foreground when Bing Bong knocks it off as he runs away from Joy on their first encounter.
 * Riley and her family are eating from chinese food boxes of the same type as the one seen in A Bug's Life and several other Pixar films.
 * Some of the background memories contain images from the "Married Life" sequence from Up.
 * The birds from For the Birds appear during Riley's family's trip to San Francisco on a telephone wire.
 * One of Riley's classmates is wearing a camo pattern made up of Toy Story characters.
 * Another of Riley's classmates wears a shirt with the same skull motif as Sid's shirt in Toy Story and Toy Story 3.
 * Models from Cars 2 are reused as background cars. These include the model of the Hugo Lemons crime family, as well as a type of micro car used for many backgrounds characters in Cars 2 (such as Cartney Brakin).
 * Some of the background cars in San Fransisco bear bumper stickers from Cars.
 * The globe in Riley's classroom appeared in Andy's room, in all three Toy Story films.
 * A box in Imagination Land features a clownfish, along with the title "Find Me", an allusion to Finding Nemo.
 * Some of the board game boxes in Imagination Land are reused from Toy Story That Time Forgot, including one with the title "For the Birds", an allusion to the 2000 short of the same name.
 * The playground in one of Riley's memories in Minnesota is taken from Sunnyside Daycare in Toy Story 3, with one difference being that the slide is not coiled but straight.
 * Colette from Ratatouille appears on a magazine cover when Riley pretends the floor is lava in the living room of her Minnesota house.
 * When Riley falls asleep after the first day of living in San Francisco, her dream turns into a nightmare and the score from Disney's The Haunted Mansion attraction plays in the background.
 * When Joy, Sadness, and Bing Bong are about to board the Train of Thought in Imagination Land, a portrait of Figment from EPCOT's Journey To Imagination can be seen in the foreground on the right.
 * While entering Dream Productions, Dream Workers dressed as Emperor Zurg can be seen.
 * The giant legs of Ted from Monsters, Inc. can be seen in Dream Productions as giant props.
 * The dead mouse that Riley sees bears a resemblance to Remy.
 * Some of young Riley's cries and squeals are recycled from Boo in Monsters, Inc. The credits list Mary Gibbs as an additional voice because of this.
 * During the scene where Riley fails to play hockey properly, if you look closely in the background, there is a banner that says, "Tri-County Youth Hockey." The Tri-County area is where the Toy Story franchise takes place.
 * In Riley's classroom, there is a poster with stars, a nod to the short film, La Luna.
 * The cloud people from Cloud Town somewhat resemble the clouds from Partly Cloudy.
 * The castle that was being demolished in Preschool land looks similar to the Disney castle from the opening sequence of Disney films.
 * Forrest Woodbush from the upcoming film The Good Dinosaur can be seen as a statue at the dinosaur park when Riley and her Mom are talking about their favorite part of the trip to San Francisco.

In-Jokes
One of the stores in San Francisco is named "Krause", an allusion to supervising animator Shawn Krause.
 * One of Riley's contacts on her messaging app is "DocPete", an allusion to director Pete Docter. Another one is "Ronnify", a likely allusion to co-director Ronnie del Carmen.
 * In Imagination Land, we see a tower of cards. Riley is on the Jack (which has an R rather than J), her mom is on the Queen and her dad is on the King.

Other trivia

 * This is the second Pixar movie to have a female protagonist. The first is Brave.
 * The film's teaser trailer features clips from all previous Pixar movies except Toy Story 2 and Cars 2.
 * Whereas in the original version the emotions of Riley's father are watching ice hockey during the dinner table scene, in most international versions, they are watching a soccer match. This can be seen when comparing the first US trailer with the corresponding UK trailer. A few international versions do retain the hockey match memory, like the Russian and French Canadian ones.
 * Pete Docter has worked as an animator on another project which explored the brain (although on a less metaphysical and more physiological level): the Cranium Command attraction at Epcot.
 * Riley's hockey rink is located where the Walt Disney Family Museum is situated in San Francisco.
 * This movie took five years to complete.