Sam Zell is an American businessman and investor, best known for his work in real estate and private equity. He founded Equity Group Investments, which played a significant role in the growth of the real estate industry in the United States. Zell is often referred to as the "Grave Dancer" for his ability to identify undervalued assets and turn them into profitable investments. In addition to real estate, Zell has been involved in various industries, including media and energy. He gained further recognition when he acquired Tribune Company in 2007, which included several major newspapers. Zell's investment strategies and entrepreneurial spirit have made him a prominent figure in American business.