HAHA!!! thats a great idea... Exactly the kind of ideas im looking for... Only probelm is that i dont have a cat (and dont want one), and the dog sleeps on hte couch all day where this thing cant get too...

the mapping idea is just for the challenge of trying it, but im still debating my method of using the revolutions to tell how far its gone.. the room (the main floor of the house) has linoleum, hardwood and a couple rugs.. i can almost guarantee its going to slide trying to go from one to the other.. it looks like i may need to add a compass into it somehow, or add IR transmitters on different frequencies around the room, and have the robot detect them and figure out where it is...

im curious as to what other people think about what it can do, or how to figure out where it is...