20. Owens Corning The building materials and fiberglass manufacturer, whose spokesperson is none other than the Pink Panther, emerged from reorganization last year and turned a profit of $8 billion. The company entered into bankruptcy protection six years ago after a series of asbestos-related lawsuits. |  Wal-Mart retakes the No. 1 slot on the Fortune 500 this year. See where America's largest corporations rank, and why. (more)  See the 37 companies that made both the Fortune 1000 and Best Companies to Work For lists this year. (more) |
