Recently, iRobot came out with a new version of the Roomba, the vacuuming robot. We had an older version last year, and loved it until the cat hair killed it (and its replacement).
It appears that this new version is easier to clean; you can open the cover and get to the inner guts where the old one appeared to get gummed up. I hope that this one survives. However, since we got it at Costco, the risk is low.
We haven't named it yet.