The Upcoming Pixar blog gives away a few Easter Eggs discovered in the new Monsters U feature film.
Here’s one:
Pizza Planet Truck: Since its prominent role in the first Toy Story, the Pizza Planet delivery truck has shown up in every Pixar movie barring The Incredibles. In Monsters University, it can be seen next to the JOX frat house while Sulley chases Mike and Archie. (This opens up a sea of geeky questions, as the truck also appeared in the human world in the first film.)