Overview: Dennis Kozlowski, once described as "The Most Aggressive CEO in America," now sits behind bars. A poster boy of excess, the former CEO of Tyco stole millions from his company, using the money for a lavish party, a gilded shower curtain and expensive art. American Greed goes behind prison walls for a rare glimpse into Kozlowski's personal life and one of the biggest cases of white collar theft in U.S. history