No monsters were harmed in the making of this motion picture.
The credits feature a list of "Production Babies" -- Babies that were born to members of the production staff during the making of the film. This is a Pixar trademark.
"Outtakes"/"Bloopers" are played during the credits, such as Sulley tripping over the top scarers. Also some of the cast do a performance of "Put That Thing Back Where it Came From or So Help Me"
Rex, the toy dinosaur from the Toy Story Trilogy also has a little cameo in the ending credits, where it seems as if he is auditioning for an acting part, he appears much taller then all the other monsters
There is an eye following the credits at one point.
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During the opening credits we see sketches of monsters with large jaws and teeth and long arms with claws hiding in and popping out of closets.