I agree with the previous positive reviews - this is a nicely designed product that is good fun, good value and sounds great.
Sadly it's not compatible with the nano 6g.
It charges fine and many controls work (like volume, pause and forward/back.) But the menu commands (up/down/enter) on the remote don't work, so if you want to find a specific track, you have to use the nano's touch screen which (unless you have tiny fingers and lots of patience) means undocking it each time.
(Also, on a more minor note, once a track is playing and the nano is showing only the album art, it's not possible to return to the track name etc. using the remote.)
If I was using a different iPod, or didn't need to use the menus, or a new version of the iPanda/iPig was brought out to make the menus work, then I'd give this 5*. But I can only give it 3* because of its lack of usability with my nano.