Nelson Mandela

Irish rock star Bono, right, and former South African president Nelson Mandela are pictured after meeting at Mandela's home in Johannesburg on May 25, 2002. Bono and U.S. Treasury Secretary Paul O'Neill were in the country on the second leg of their African tour to highlight the need for development aid to the world's poorest continent.

Credit: JUDA NGWENYA/AFP/Getty Images