Everyone's buzzing online over Lance Armstrong’s huge sit-down interview with Oprah that begins airing this week. Winfrey announced Tuesday morning that she got so much great material from the disgraced athlete that the interview would now run over two nights, Thursday and Friday on the Oprah Winfrey Network (OWN).

Winfrey herself immediately began teasing her legion of followers about what they could expect. Right after the interview concluded on Tuesday at Armstrong’s Austin, Texas, home, she tweeted, “Just wrapped with @lancearmstrong More than 2 1/2 hours. He came READY!”

Winfrey made an appearance on Tuesday morning on best friend Gayle King’s morning show, “CBS This Morning,” to preview the one-on-one with Armstrong. "The entire interview was difficult," she explained. Armstrong "did not come clean in the manner that I expected," and continued that this was "surprising to me ... my team, all of us in the room ... I feel that he answered the questions in a way that he was ready."