python like 'expressions' character animation

Hey ya-- I was wanting to know if it would be possible to do something similar to expressions in maya for character rigging?-- So that you can move a foot and the torso will move in relation to that following some simple maths equation-- I find it pretty helpful-- so the python would have to affect the bones–

cheers–

any idea how the character animation tools are comming along?

try this:
http://www.zoo-logique.org/3D.Blender/scripts_python/snippets/walkingontheceiling.zip