The Secret of “A113” [crossovers & easter eggs]
Seen any popular animated movies recently? Chances are, it would have had “A113” hidden somewhere clever and inconspicuous — consider it the animators way of saying hello to their friends. If you’ve never noticed this before, prepare to have your mind blown!!!

(L to R) Pete Docter, Andrew Stanton and Chief Creative Officer of Pixar and Walt Disney Animation Studios John Lasseter posing outside room A113 in the 1990s.
The code “A133” is a ‘Easter egg’ — an inside joke — that refers to a classroom number at California Institute of the Arts. I could go on about how much I love Easter eggs like these, Pixar animations, anything Brad Bird has a hand in creating, and, well, mostly all things animated really, but I’ll let the pictures do the talking from here:
Cool huh. I am imagining this is you right now: