Since Oprah announced the end of her talk show, fans have wondered how producers would handle the last remaining episodes. Now Harpo Studios has revealed that the third- and second-to-last episodes of the show will tape at Chicago’s United Center on May 17. Producers say they want to properly accommodate “the biggest names in movies, music and TV.”

As to which stars will take part in these episodes remains top secret. Not even Oprah knows who will be at “Surprise Oprah! A Farewell Spectacular.”

In a statement, executive producer Sheri Salata, wrote: “As most of our viewers know, being surprised is not one of Oprah’s favorite things. In the spirit of our farewell season, she is making a rare exception, and we intend to make the most of the opportunity. It will be something to see!”

The two-part episode will air May 23 and May 24.  The series finale of The Oprah Winfrey Show will air May 25.

(Photo: Robert Cianflone/Getty Images)