Here is another short screencast showing a slight update from yesterday. I modified the paths to be linear and added a path graphic to show them. Note: I spent some time tracking down a 'bug' in iTGB today so I didn't make much progress. I filed it, but FYI, objects on a linear path require 'UsesPhysics=1', while bezier and catmull don't care. I should have figured it out right away, but I was a bit distracted.
Anyways, without further ado, here is the second screencast (with an ugly water mark, but hey, it's a demo):
