Meredith Vieira's Favorite Today MomentsThe departing host shares her fondest memories – the Beijing Olympics! The Royal Wedding! – from the morning show


"I had the opportunity to join Big Apple Circus Clown Care and become a pediatric clown for the day. These 'clown doctors' visit thousands of sick children every year, putting a smile on their faces and allowing them to feel like kids instead of patients," Meredith Vieira tells PEOPLE. "It was an incredible honor to be one of them. My name was Dr. Ditsy, and boy, was I!"

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