Story : Penn & Teller expose America's love/hate relationship with Wal-Mart. We look at the good and bad sides of the biggest employer in the US. We challenge the director of the documentary, "Wal-Mart: The High Cost of Low Price," we reveal union efforts to smear Wal-Mart, we meet a chronically unemployed young mother in Chicago to see how her life changed when Wal-Mart came to town and we look for the silver lining behind third world sweatshops.