Endorphin has released a PLE im not shure how long ago, or if any of you know i just thaught it might be something cool to put up, and since you can export blender animations in FBX im shure you could use it to create some pretty cool effects. by the way this is being used for the simulation in the new star wars game the force unleased.
Heres a link to their website http://www.naturalmotion.com/