Scooba, from iRobot, scrubs your floors. Coming Winter 2005. My Roomba is great, and this should be great too, right? Although Roomba collects all the filth from the floors of my house into three (three!) different little filter areas, which are a pain to empty and which tend to spill everywhere, I imagine that the newer Roombas have solved this problem, and that the Scooba has some sort of ingenious method of handling the dirty-solvent problem as well.
I agree with the developers that clothes-folding robots are crucial. Such a thing could even be built into a wardrobe!
Secretly Ironic 