Everyone looks on as our new Roomba (floor cleaning robot) drives around the kitchen in search of things to vacuum. It employs several different navigation algorithms (diagonal runs, spirals, wall hugging, cliff detection) which the kids have already started to evaluate. Nala does not know what to think of this low profile intruder but has so far elected to keep her distance although she did become quite concerned when it started to push her food bowl around. Jeanine is reserving judgement until she sees the final results. We have tentatively named it Dusty.