As you know, Pixar loves to throw little Easter Eggs into their films, and here are three of them hidden in their latest animated adventure Monsters University! The movie is currently out in theaters, and if you haven't seen it yet, you should check it out! It's really good.
A113
This number refers to the classroom where John Lasseter, Brad Bird, Pete Docter, and Andrew Stanton studied at CalArts.
Pizza Planet Delivery Truck
The delivery truck in the drive away is the same one that carried Buzz and Woody to the now iconic pizza restaurant.
Luxo
The ball with a star on it made it's first appearance in a groundbreaking short produced in the early days of the studio.