Monsters, Inc. is a 2001 computer animated family comedy film and the fourth feature-length film produced by Pixar Animation Studios. It was directed by Pete Docter, Lee Unkrich, and David Silverman, and was written by Jack W. Bunting, Jill Culton, Peter Docter, Ralph Eggleston, Dan Gerson, Jeff Pidgeon, Rhett Reese, Jonathan Roberts and Andrew Stanton. The film was released to theaters by Walt Disney Pictures in the United States on November 2, 2001, in Australia on December 26, 2001, and in the United Kingdom on February 8, 2002. It was a commercial and critical success, grossing over $525,366,597 worldwide. Review aggregator Rotten Tomatoes also reported extremely positive reviews with a fresh 95% approval rating.