Tape day has arrived and just hours before the show starts, Oprah is cleaning up her office to prepare for the first lady's arrival. "Mrs. Obama had said that she wanted to spend some quality time with me before the show," Oprah says. "So I started to look around my office [wondering], 'What's Mrs. Obama going to see when she comes into this office?' She's going to see a lot of junk is what she's going to see."

Watch Oprah's mad-dash cleaning session

Then, Oprah gets word that the first lady has arrived. "I said to her, 'I'm so grateful that you can come and thank you so much,' and she said, 'I think we kind of bogarded our way in here,'" Oprah says. "Which says to me they did actually say, 'We really want to come.'"

Hang out with Oprah and Mrs. Obama