Aligorith has written a great new tool for animators. He has made a Propogate Pose tool. Which in a nut shell will create changes to a pose through the timeline up until it hits a static pose. Thereby saving the animator a lot of time going frame by frame to adjust one little change or tweak.
This tool is going to make life much easier for animators.
You can find a full explanation of the tool as well as a short “release notes” for it on his blog.
To try Propogate Pose for yourself, grab a recent SVN build or wait for the 2.57 in the next week or so (?) to try it out.