Cicero Moraes wrote about his forensic reconstruction work with Blender earlier this year. Here's another article by him which also includes a timelapse video of the muscle reconstruction.
I wrote for a archeology specialized blog about, describing a technic of facial reconstruction using Manchester method, that consists to model the facials muscles to reconstruct the face.
I sent a time lapse video for a part of process.
The skull was reconstructed with Python Protogrammetry Toolbox and whole the process was made with free software.