Oprah Winfrey interviewed 28,000 guests on her show
Oprah Winfrey had interviewed about 28,000 guests on her show and 1.3 million audience members over the past 25 years, according to figures published in the June edition of chat show queen's magazine, O.
Winfrey said on her talk show Friday that she was going to Los Angeles for a ``one-on-one'' interview with Leno to air on ``The Oprah Winfrey Show'' on Thursday.