Fred Wang, 54
In 1986 he took over Wang Laboratories, the once powerful computer company his father, An, founded. A mere three years later, with the company failing, Dad pushed him out. (Wang Labs filed for bankruptcy in 1992.) The younger Wang still attributes the company's problems in part to his former employees, who he says refused to embrace the PC. "They simply didn't get it," he says. Today Wang lives quietly in Cambridge, Mass., spending most of his time mentoring and investing in young entrepreneurs.