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.
There is an eye following the credits at one point.
"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
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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.