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."