UPDATE: This tutorial uses the old way of doing dynamics via the Blender Game Engine. There is now a new dynamic system in Blender that is easier to use. You can read about it here: wiki.blender.org/index.php/User:Sergof/GSoC2012/Documentation
Fracturing dynamic workflow in Blender. It shows one way to break up a wall using boolean operations, how to use the new voronoi cell fracture addon that comes with blender and how to make it all move and react dynamically.
I hope you find it useful.
Thanks for watching.