Michelle Obama to help Nickelodeon's play campaign

First Lady Michelle Obama is named Barbara Walters' Most Fascinating Person of 2009. In this Oct. 15, 2009 file photo, first lady Michelle Obama addresses guests during the Miami Dade College Florida Campus Compact's annual Awards Gala and Luncheon in Miami. (AP Photo/Alan Diaz, file)

September 23, 2010 11:41:18 AM PDT
First lady Michelle Obama will symbolically pull the switch turning Nickelodeon and its sister networks off for three hours Saturday, part of its annual effort to encourage children to go out and play.