Balls to the Wal  Big-boxing a mega-retailer's ears  A "quack"
has been defined as someone who's got something good for you, no
matter what's wrong with you. That must make documentary
filmmaker Robert Greenwald a kind of anti-quack. No matter what
you think is wrong with the world—environmental degradation,
street crime, poverty, outsourcing, racial prejudice, failing
public schools—Greenwald knows something that's making the
problem worse: Wal-Mart.  In Wal-Mart: The High Cost of Low
Price, the director of Outfoxed: Rupert Murdoch's War on
Journalism and Uncovered: The War on Iraq, flings an ample
supply of feces at the world's largest retailer and hopes that
some of it will stick. Some of it does. But a far larger pile,
alas, sails from the screen, falls short of its target, and
lands with an unceremonious plop on your coffee table.  That's
too bad, because there are some solid points in the film,
providing genuine grounds for criticism of Wal-Mart. Former
managers allege that time sheets were routinely an