Thanks for the responses!

Here are some images of my current rigging problem.  I've mostly figured out the inclusion/exclusion zones, but when I move this pinky or ring finger, verts move in the knuckle area across the palm.

Maybe it has something to do with the spherical falloff, which I haven't played with yet.  But maybe not.  I'll play with that.

I've also included a look at the bones.  Maybe that will help?

Thanks again, guys.  Maybe this will help us solve this problem. :)