Rigid Body physics:Explaining the difference between concave and convex meshes

Hi there
Blender now has a well integrated great Rigid Body physics component
One of the basic factors for achieving realistically looking collisions,though,is to know when to use the various “Collision Shape” options available and (more importantly) why
This video is an introduction to the mesh colliders’ options available in Blender’s physics engine

Here’s the link to this tutorial :
http://www.youtube.com/watch?v=mrjIbp63zWc

Hope you’ll enjoy this!
Peter