After 27 appearances, Celine Dion
—The Oprah Show
's most frequent celebrity guest—says her favorite visit was the time she shared the stage with all 13 of her siblings and her parents. "We all sang together," she says. "It was an amazing surprise for me, very touching."
Celine says she'll always be grateful for Oprah's inspiration and influence. "Oprah, thank you for being part of my career and becoming a friend through the years. I love you very, very much."