I should probably get one....
How well do they work with cable boxes? If I have something recording on a channel that needs the cable box, and someone comes in and watches something on a different channel, will the tivo box still be able to do so, or does it need it's own dedicated box?
Also, is it possible to hack a larger hard drive into the thing? What about transferring data to the PC, is it a standard format where I can just mount the hard drive in a drawer so I can dump it to a PC easily?