Warren Buffett, Oprah Winfrey ... The net worth in the room: $126 billion. The historic photo folds out as the cover of the 30th anniversary Forbes 400 issue, the definitive ranking of America's ...

(Photo by Thos Robinson/Getty Images for New York Times) Warren Buffett is well known for stressing buying stocks of businesses at prices less than their inherent value, and Boeing is one of those ...