There’s a popular fan-started myth that all Pixar movies exist in the same universe. Sometimes the proofs get quite convoluted, but they all seem to work. Pixar just released its ‘official’ argument and they too say that all the films are connected, only through their Easter Eggs.
An Easter egg is an in-joke or reference that is put in by the film’s creator to reward close viewing of the film. At Pixar, they have a few regular appearances (The Pixar Ball, the Pizza Planet truck) but there’s also another grand tradition – hiding characters from future films:
If you were paying attention that video linked Finding Dory, Inside Out, The Good Dinosaur, Monsters Inc., Brave, Cars, Toy Story 3, Up, Ratatouille, Wall-E, The Incredibles, Finding Nemo, A Bug’s Life, to the original Toy Story — Pixar’s first animated feature.
Which is your favorite Pixar Easter egg?