Roland Hartmann of graphicinmotion.com shows how to create and use 3D model particles using Stardust.
This tutorial covers many features such as using the new Model and Material nodes , Importing OBJ and MTL files, Applying materials, Adding Environment, Ambient Occlusion and more.
Stardust is a Modular 3D particle system for Adobe After Effects
Stardust 3D Models Tutorial