Oprah Winfrey to announce she 'll end show in 2011 during a live broadcast Friday . It has been the highest-rated talk show for 23 consecutive seasons , her Web site says . an estimated 42 million U.S. viewers watch it weekly ; show had its origins in 1984 in Chicago . Forbes 's wealth was estimated at $ 1 billion by Winfrey in weekly .
Oprah Winfrey to announce she 'll end show in 2011 during a live broadcast Friday . It has been the highest-rated talk show for 23 consecutive seasons , her Web site says . An estimated 42 million U.S. viewers watch it weekly ; show had its origins in 1984 in Chicago . Winfrey 's wealth was estimated at around $ 1 billion by Forbes in 2004 .