Article Focus: In this video tutorial, Creative Cow Leader Jeff Bellune demonstrates how to use the tools available in particleIllusion and After Effects to get a particle emitter source to track an element in a video clip. Part Two concerns the animation of the emitter itself so that it accurately tracks the video element.
These tutorials are so useful, they are a great reference I just wish there was a way to download them to stop having to wait for them to load and so I don't have to keep leaving the project to flip back to the internet to watch the next part!!