Watch her unforgettable reaction.
Then, seven years after that initial surprise, Oprah Show producers surprised Nancy at her office. "Please do not tell me that Oprah Winfrey is inside that camera again!" she said. "Is Tom Cruise here somewhere?"
As Nancy tried to get ahold of herself, Oprah revealed her second big surprise. "Tom is coming back right here to this very studio, and he asked that I ask you to come back," Oprah said.
To this day, Nancy says she gets recognized everywhere she goes, and she'll always be Tom's number one fan.