What to get the homeowner who has everything? Perhaps a robotic vacuum styled in the fashion of an RC toy will fit the bill. Here at a GDGT event in New York City we happened upon iRobot's Roomba 790, which comes with a touchscreen remote for manually controlling where the bot goes. The controller -- make that the "Wireless Command Center" -- has an interface matching the one on the 790 itself, so there's no second set of menus to master here. In addition to deciding where it moves, you can also schedule daily cleanings or tap a "Clean" button to push the robot into action.Though this isn't the first time iRobot's dabbled in remote-controlled vacuu
