This strip also features Mike, whose reaction to seeing another PIXAR character - specifically, one of the aliens from Toy Story - with THREE eyes is to say, "Now this hardly seems fair".
Baby Driver: A clip from the movie is seen when Baby is flipping through TV channels. He quotes the "You and I are a team", line at several points during the movie. Notably this is the first time a Pixar movie was featured in an R-rated film.
Doc: Don't feed me any more lines from Monsters, Inc.! It pisses me off!
Black Mesa features papers lying around that list the color-coded filing scheme for Mike's paperwork (Pink to Accounting, Fuchsia to Purchasing, Goldenrod to Records, leave the Puce).
Kingdom Hearts III has the level Monstropolis, in which Sora, Donald, and Goofy fight off legions of Heartless who are working with Randall, who managed to find his way back from the human world and is seeking revenge following the events of Monsters, Inc..
If it's not outright evil, it is amoral in the extreme and they flaunt their immorality in public with the smug satisfied self confidence of monsters who've gotten away with it. Just go back and watch, again, the sneering manner in which EA's Kerry Hopkins patronizes her way through an "explanation" of what loot boxes are.
In his review of Little Monsters, Critic calls Monsters, Inc. a good interpretation of the "monsters-scare-kids-because-it's-their-job" concept compared to the former.
In the SuperMarioLogan episode "The Costume Contest!", Bowser Junior dresses up as Mike, and dresses Chef Pee Pee as Sulley. Junior also insists that they talk entirely in quotes from Monsters, Inc., but Chef Pee Pee soon points out that Junior is saying quotes that aren't Mike's.
In the Itchy & Scratchy cartoon from "Loan-a Lisa" that spoofs the beginning of Up, Scratchy and his girlfriend watch clouds resembling Mike, Buzz Lightyear and WALL-E.
In "Angry Dad: The Movie", a poster for Monsters, Ltd. is hanging on a wall inside the animation studio.
Toy Story Toons: In Partysaurus Rex, the fuzzy covering on the toilet lid resembles Sulley's fur.