Madonna and Beyonce on Oprah's first farewell yesterday

Madonna and Beyonce Knowles appeared on Oprah Winfrey's first farewell TV show yesterday (23.05.11).The singing stars joined with Tom Hanks and Tom Cruise, Dakota Fanning, Halle Berry for the first part of a double send-off for the hugely influential talk show host - once hailed as "arguably the world's most powerful woman" by Time magazine.Tom introduced surprise guest Madonna as "a viewer from