Nobody says no to Oprah Winfrey - except Rosie O'Donnell. Insiders say Winfrey wanted to have her on her show to talk about O'Donnell's book, Celebrity Detox, which bashes Barbara Walters, Elisabeth Hasselbeck, Donald Trump and others. But while many would kill be be on Oprah's program, O'Donnell declined. "She's doing an interview with Diane Sawyer instead," says an insider. O'Donnell's rep said, "Rosie has always been booked with Diane. We gracefully declined Oprah's offer. I'm sure Rosie will do Oprah's show another time."