Oprah Winfrey took over the Kodak Theatre at Hollywood and Highland on Monday for an Ultimate After-Oscar Party edition of 'The Oprah Winfrey Show' (weekdays, syndicated) that included Anne Hathaway, Geoffrey Rush and Oscar-winners Tom Hooper and Colin Firth ('The King's Speech) and Oscar-winner Melissa Leo ('The Fighter').

At the end of the show, Winfrey brought out Staten Island's PS 22 fifth grade children's choir (they closed Sunday's Oscar ceremony with a chorus of 'Over the Rainbow') to sing 'Firework' and, surprise, Katy Perry -- dressed all in gold -- stepped out from behind the stage to join the children in song. Perry had flown all night from Vienna to appear on the show with Winfrey and the children and, appropriately, her appearance was heralded by electronic fireworks on stage. Russell Brand should be proud.