Oprah invited the Black Eyed Peas to perform at her Season 24 kickoff party on Michigan Avenue in Chicago, but they had more than just a song and dance in store. When BEP started to sing "I've Got a Feeling," the crowd of about 20,000 transformed into a flash mob, and the scene stunned the queen of surprises. She cried out, "That is the coolest thing ever!" as the tune ended.
Terrence Antonio James / Chicago Tribune