Celebrating Oprah

Oprah Winfrey's Star-Studded Farewell Taping

See the A-listers – Halle Berry! Maria Shriver! Madonna! – who bid adieu to the talk-show queen at Chicago's United Center

KRISTIN CHENOWETH

The singer-actress serenades the talk-show host with "For Good" (from her musical Wicked), as scholarship recipients who have benefited from Oprah's generosity stand behind the Broadway star as she sings, "I know I'm who I am today, because I knew you."