In January 2008, Oprah announced her 61st Oprah's Book Club selection, A New Earth by Eckhart Tolle. Unlike past selections, this book isn't a novel or a memoir. In fact, Oprah called it her boldest choice yet.

"Being able to share this material with you is a gift and a part of the fulfillment of my life's purpose," she said. "It was an awakening for me that I want for you too."

To bring Eckhart's spiritual teachings to readers around the world, Oprah teamed up with the author for the first live, interactive Web series in Oprah Show history. Every Monday, people come together in the Oprah.com online classroom to discuss the chapters' themes and ask questions.

The 10-part series kicked off on March 3, 2008, and since then, Oprah says it's all she wants to talk about. "It's just the most exciting thing I've ever done," she says. "Millions of people around the world have begun experiencing A New Earth for themselves and are awakening to the possibilities of their lives."

During the classes, Oprah says she and Eckhart have touched on topics like how to quiet the mind, how to put the ego in check and how to be fully present in the moment. "The one thing I know for sure is that you cannot even begin to live your best life without being connected to your spirit," she says.

New Earth students from as far away as Iraq and Australia are joining Oprah to continue the conversation about her favorite topic.