iRobot's first attempt at a telepresence robot, a modified Roomba, was a false start, but now they're back with an all-new bot called AVA which should right all wrongs. The bot can adjust its own height from three feet to five feet tall to meet you at eye level, with a tablet perched on top (this is CES 2011, after all). Its base is an odd three-wheeled configuration for maneuverability, and the robot has DARPA Challenge-style environment mapping to avoid bumping into anything or anybody. For sensors the AVA is using dual Kinect-style PrimeSense sensors, along wit
