Office supplies giant Office Depot, based in Boca Raton, is the latest major American corporation to get itself in trouble with federal regulators. The company, which claims $14.8 billion in annual sales, is being investigated for improper contact with business analysts. Specifically, representatives of the company allegedly phoned analysts, seeking to manage expectations in advance of a disappointing earnings report, in hopes of heading off a stock drop. It didn't work -- and even if it had, it