Looking like a Sentinel from “The Matrix,” the Nexus Q was meant to be the next generation of Internet-connected set-top devices. Too bad this $299 orb was almost twice expensive as the competition, but did half as much. Where was the Google TV integration? Why could you only stream video from the Play store and YouTube? Who would want to compete with friends to que up music on this thing? Mercifully, Google never released this device to the general public.