Oprah Winfrey Reveals Her Worst Guests Ever On Her Talk Show

The media mogul dished all about the most annoying people she's had to interview throughout her career during an appearance on Harry Connick Jr.'s talk show "Harry." Oprah admitted she often pretends to be interested in boring conversations with her go-to word: "Wow!" She also spilled about her longtime relationship with partner Stedman Graham. Get the details!