Hollywood send-up. No-name actors are making a low-budget period drama called "Home for Purim," when an anonymous post on the Internet suggests that one performance is Oscar-worthy. Then, two more cast members get Oscar-related press: buzz in "Variety" and appearances on TV prompt the studio executives to insist on changes in the script in anticipation of a blockbuster. Jump ahead a few months to the days before Oscar nominees are announced: just the possibility of a nomination has changed the...