Today will be the final episode of The Oprah Winfrey Show and over the past 25 years, Oprah has established herself as one of the world's most powerful women. And with power comes a 'little black book.'

Last week, 13,000 fans and some of Hollywood's A-list came out to bid The Oprah Winfrey Show a final goodbye during the 'Farewell Spectacular.' The star-studded event included Beyonce, Tom Cruise, Will Smith, Michael Jordan, and Maria Shriver.

Oprah is leaving the talk show to devote more time to her cable network, which launched in January.

Over the years, Oprah's popularity and credibly soared. The name Oprah Winfrey in and of itself is a brand. If Oprah said she liked something, be it a book, a movie, a president -- the world listened. She has time and time again out done herself, creating a motto for women across the world to 'never give up on your dreams.'

During last week's 'Farewell Spectacular,' Beyonce performed her new single, Run the World (Girls), which seemed more than appropriate considering Oprah was ranked as the 3rd most powerful women in 2010.

Before the performance, Beyonce said to Oprah and 13,00 adoring fans, Oprah Winfrey, because of you, women everywhere have graduated to a new level of understanding of what we are, of who we are, and most importantly who we can be. Run the world, Oprah.

We can run the world!

There's no doubt that Oprah will continue to engage citizens across the world with her new endeavors, and continue to encourage women to 'run the world.' And with the high profile friends that Oprah has, anything is possible for the former talk show host.

We went through some of our old and new Oprah pictures to take a look at who might be on her speed dial.