Actually, I'm working on one. Another feature I'm adding is to be able to briefly say stuff to other NPCs (triggered automatically, using Vanilla voices).
There is a mod available RIGHT NOW that can also do the normal activity animations, but it is a BETA and it's other feature (third person body in first person view) is quit hefty on the CPU. Download that mod here: http://www.tesnexus.com/downloads/file.php?id=20891