Trivia: There is a scene when the lemurs are showing a book called "To Serve Lemur". This is similar to one of the classic episodes of The Twilight Zone, "To Serve Man" when the "aliens" allegedly come in peace but actually want to eat the people of earth.
Trivia: When Quasimodo is singing a few minutes into the film, he is standing above the town street where people are walking around, doing business. If you look closely to the lower right of the scene, you can see Belle from "Beauty and the Beast" reading a book in her blue dress, walking.
Trivia: The "Montage" song is actually from an episode of South Park (Parker and Stone's TV show) called "Asspen," where Stan learns how to ski in a similar montage style.
Trivia: There is a little reference to the novel One Hundred Years of Solitude by Gabriel Garcia Marquez. Ben, the robot, upon meeting Jimmy says something like "Solitude is great, but 100 years of it..."
Trivia: According to Disney there were 6,469,952 spots painted on the dogs.
Trivia: The Iron Giant has only 53 words of dialogue in the entire film.
Trivia: 1 tells 9 that he led the others to their current hideout, which he refers to as "sanctuary". The building happens to be Notre Dame church, famously referred to "sanctuary" in "The Hunchback of Notre Dame."
Trivia: Riley is the only character in the movie with both male and female emotions.
Trivia: A popular film poster shows Emily and Victor reaching their hands toward one another. Emily's bony hand is on her right and Victor's suit and vest are backwards (note its buttons). Some say it was for legal reasons - Johnny Depp's name was supposed to appear on the poster first because of a contract, and they wanted the characters underneath the corresponding star names, hence the issue. Others say it was simply because the picture looked better with the bride on the right side.
Trivia: When Barley and Ian are paying their toll at the "troll bridge", look on the right hand side and you can see the Pizza Planet Truck.
Trivia: Sweet Pete's tragic backstory is similar to Bobby Driscoll who voiced Peter Pan in the original Disney film. Many people have expressed disgust over this, as it distastefully satirizes Driscoll's own personal tragedy and downfall of being unable to find work after getting older.
Trivia: At least three actors in this film have been involved in other Pocahontas-related projects. Gordon Tootoosis also acted in Pocahontas: The Legend, while Irene Bedard and Christian Bale later appeared together in The New World.
Trivia: In the closeups of Goob on the baseball field, there are two billboard advertisements on the fence behind him - one is "Jungle Book" featuring Mowgli with Baloo, and the other is "Toy Story 2" featuring Woody, Jessie, and Bullseye.
Trivia: When Nancy Tremaine (Idina Menzel) is singing to Morgan about her memories to make the tree come to life again she sings a line "Let it glow, let it glow." This is an homage to Idina Menzel as Elsa in Frozen singing "Let it Go".
Trivia: When Doc Terminus is tied to the harpoon shot from the cannon and goes through the building roof, you can hear a "Goofy Holler."
Trivia: When Ralph and Venellope arrive in the internet they are bombarded with pop up ads. One of those ads features a picture of a woman with short brown hair. That woman is Aunt Cass from the Disney animated film, "Big Hero 6." In addition, Baymax from that movie makes a cameo appearance at, "Oh My Disney!"