Here:
http://zeus.polsl.gliwice.pl/~obi1/mordobij_gk.rar you will find litlle physics/animation demonstration. It was done for my cg labs assignment. In this very small app you will see animation that is simulated by physics engine and you will be able to hit Cally model with forces. It nothing very playble and it is 2-3 months old but effects could look funny

Screen:
http://zeus.polsl.gliwice.pl/~obi1/head.JPGit is win32 app, just run mordobij.bat
Keyboard:
x+PageUp,
y + PageUp,
z+PageUp x+PageDown,
y + PageDown,
z+PageDown to change forces
use arrows to move through the level,
Mouse:
left mouse click on bone name to add force to that bone (it has to be high, around 300-600 N)
Rotate + right button pressed to rotate view