Oprah kicked off the final week of her talk show with the first of a two-part "Farewell Surprise Spectacular," which brought thousands of fans and a bevy of mega-celebrities to Chicago's United Center to host and toast the daytime queen. Oprah famously hates surprises, but she had no idea who was showing up to send her off. Below, see some of Oprah's most shocked, awed, joyous and verklempt reactions to the spectacle unfolding in front of her.
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