Hands four, ones cross over! Dancing Under the Stars is back, and tonight, it’s contra dance [http://allaboutfifth.blogspot.com/2012/07/tonight-contra-dancing-on-fifth.html] . At 6pm, Rolie Polie Guacamole will be getting the party started with kid-oriented high-energy tunes. Then at 7, the littlest Slopers cede the floor to