Cast (Voices):
Billy Crystal (Mike Wzowski)
John Goodman (James P. Sullivan)
Steve Buscemi (Randall Boggs)
James Coburn (Henry J. Waternoose)
Mary Gibbs (Boo)
Bonnie Hunt (not released yet)
Jennifer Tilly (Celia)

Directors: Peter Docter, David Silverman (feature film debuts)
Screenwriters: Andrew Stanton (Finding Nemo; cowriter of Toy Story 2, A Bug's Life); there are other writers as well.
Original music: Randy Newman
Distributor: Walt Disney Pictures
Production Company: Pixar Animation Studios (Toy Story 2, A Bug's Life)
Filming: Production on this movie started on May 4th, 1999.
In post poroduction now.
Release Date: November 2, 2001 Nationwide

Synopsis:
"Monsters, Inc." is the largest scare factory in the monster world and James P. Sullivan is one of its top Scarers. Sullivan is a huge, intimidating monster with blue fur, large purple spots, and horns. His Scare assistant, best friend and roommate is Mike Wzowski, a green, opinionated, feisty little one-eyed monster. The cast of characters also includes the factory's CEO, a crablike monster named Henry J. Waternoose and the snake-headed, beguiling receptionist Celia. One of the top Scarers is a sarcastic chameleon monster named Randall Boggs. Visiting from the human world is Boo, a tiny girl who goes where no human has ever gone before.
Pixar press release

Additional details:
In this parallel dimension populated by creatures of various size/shape a corporation maintains portals to the underside of childrens beds in our world. Monsters must audition for a spot and then are transported under the bed and must capture screams. Screams are the chief fuel source of this nether realm. There is only one law...Never Bring Back A Child! Well, of course two bumbling monsters bring a 3 year old girl back and are immediately punished by being exiled to our dimension. There they find out that the monsters of our urban legends i.e. Bigfoot, Nessie, Yeti are also exiled monsters. A lot of very funny stuff here. Eventually the heroes realise that not only screams power their home world but so does laughter.
Although the working title is Monsters, Inc., it is referred to as "Hidden City" by everyone because it was being developed at the building across Pixar's main building, and takes that name from the Hidden City Cafe in Point Richmond, where the directors love to order their dinners from when working late.

Official site:
http://disney.go.com/DisneyPictures/monstersinc/

Rotten Tomatoes Flipbook:
http://www.rottentomatoes.com/movie-10000076/flipbook.php?trailer=10000131&page=1