Barbara Walters has interviewed everybody from Saddam Hussein to Michael Jackson. She has been mocked on "Saturday Night Live" and recognized in the American Heritage Dictionary. Through her many years interviewing cultural icons, Walters has become one herself.
37. FRANCES HESSELBEIN, PRESIDENT AND CEO, FRANCES HESSELBEIN LEADERSHIP INSTITUTE She rose to fame as CEO of the Girl Scouts of the USA. She was awarded the Presidential Medal of Freedom for transforming the Girl Scouts. Even today, in her late 90s, she continues to train a new generation of leaders through her eponymous institute. Fortune's 50 greatest leaders of 2015