The snow level’s expected to drop to 500 feet Saturday in the local mountains, and Sunday temperatures could be close to freezing in Southern California. But that won't stop the Academy of Motion Picture Arts and Sciences from staging the last of this year's major awards shows with young hosts and a slate of 10 nominees for Best Picture. Pulitzer Prize-winner Joe Morgenstern, who reviews films for the Wall Street Journal and KCRW, has a preview of this year's Oscar contenders.