In a effort to get children off the couch and out of the house for some good old-fashioned outdoor playing, Nickelodeon went off the air for three hours on Saturday afternoon. During that time, the kids’ network had a celebration in Washington DC and invited the First Lady Michelle Obama and other A-listers like Carmelo Anthony, Dwayne Wade, LeBron James, Chris Paul and Keke Palmer to come and join the fun. Check out the good times!