William, a show guest, says hello to Oprah during the taping of Bill Cosby Calls Out the "Dirty Laundry".
Browse past shows from The Oprah Winfrey Show on Oprah Radio.
Dr. Oz's excuse-busting workout takes only 20 minutes three times a week.
Take a behind-the-scenes look at episodes of The Oprah Show that aired the week of August 18, 2008.