For journalist Piers Morgan
, the most inspiring show he's ever seen was her interview with Nelson Mandela
, who Piers says "was the greatest figure of the last hundred years." "I met him once for 10 minutes and wished I could have interviewed him," Piers says. "That was a show that will live with me a long time."
Plus, Piers shares his heartfelt gratitude to Oprah. "Oprah, you were my first, you were my best, you'll be the one I always remember in the fondest possible way," he says. "I'm very happy for you. Thank you."