Publisher THQ sent me one of the $48 Stacking dolls. I've unstacked and stacked it a few times. I've even done it on video for you to watch.
The dolls are on sale at the website for Stacking development studio Double Fine Productions, though I hear they may have already sold out. We'll have to give this one away at some point.
Stacking the game is based on the concept of the stacking dolls, allowing players to stack and unstack their character as they proceed through a comedic adventure. I haven't played it yet, but our Mike McWhertor has. Read his impressions. The game will be available for download on the Xbox 360 and PlayStation 3 next week.