dont know what it is?
http://www.tuxisalive.com/
availible at think geek
http://www.thinkgeek.com/geektoys/rc/9df0/
it is basically like the nabaztag but is tux, open source and no subscription fee. linux compatible of course (actually i think it is only linux compatible, i dont mind that though
check it out.
only thing that i would want to add to it is wifi, it connects to the computer over rf (wireless so you can use it anywere at home) and while that give functionalities like playing music stored on the system your computer needs to be on to do pretty much anything usful with it.

