Love Child. The app is Kinect compatible, so viewers can navigate the network's streaming selections with their voice or gestures.
HBO's app was one of 35 announced for Microsoft's platform in June that are expected to launch by the end of the year. Of course, HBO Go is available to those with a subscription; stand-alone streaming subscriptions for HBO will first be available in 2015. The app also requires authentication with an eligible TV provider, a list of which can be found on Microsoft's announcement page.