The Producers Guild of America, whose choice of best film often is mirrored at the Oscars, announced its nominees Monday. They include: No Country for Old Men, Juno, There Will Be Blood, The Diving Bell and the Butterfly, and Michael Clayton. Conspicuously absent from the list is Atonement which was named best film at Sunday's Golden Globe announcements. Three films were nominated in the animation category: Bee Movie, Ratatouille, and The Simpsons Movie. The winners will be announced on February 2.