The era of the Saturday morning cartoon is officially over. This morning, The CW’s Vortexx programming block is airing episodes of Cubix, Sonic X, Dragon Ball Z and Kai, Digimon Fusion, Yu-Gi-Oh! and more for the very last time. Next week, The CW is parting with its animated block, signing on for One Magnificent Morning, a live-action block filled with educational shows for kids. This made today the last day to catch cartoons on a network station with your kids.