Sanyo has announced the 'Roborior' (Robot + interior), which from what I can parse from the mangled Japanese translation is a home protection robots that can monitor for intrusions and use a built-in Foma cellular phone to send out pictures and information to home owners. That's all well and good except that it also appears to be a bright blue glowing lump of immobile plastic—burglars are never going to notice that.
On the other hand, it does call to mind how fantastic it would be to have a mind-flaying levitating jellyfish for a pet. Let's just soak in that idea for a while.
Oh, they want 2,700 someodd dollars for it, so hopefully there's a little something I'm missing. (Thanks, Lars!)
Product Page (Google Translate) [Roborior]