Attention Malia and Sasha: The remote is in Mom's hands this Saturday, and she's sending a message to you and the rest of the nation's kids to "Go out and play." At noon EST on Sept. 25, first lady Michelle Obama will tell Nick viewers to "get ready to shut down your computers, put down your cell phones and turn off your TVs." Nickelodeon, Nicktoons, Nick Jr. and TeenNick will then go off the air for three hours, according to the Associated Press. The cartoon blackout is part of Nickelodeon's annual Worldwide Day of Play campaign, an annual effort to...