Herdmaker is a MEL script I have written to populate scenes with a randomly generated/positioned/rotated herd made of instanced geometry. This video tutorial covers how to use the script.
You may download this script for free at http://www.andrewklein.net/share/herd...
The script is free to use and tweak for non-commercial purposes.
I am an Autodesk Certified Instructor for Maya and a Pixologic Zbrush Certified Instructor, as well as Full Time Faculty at The Art Institute of California, San Francisco