GMH2 is an advanced version of the GMH script, specialized in hair modeling & stylizing, created by Phung Dinh Dzung.
Golaem Crowd for Maya
Golaem Crowd is a Maya plugin for creating visually compelling and believable crowds.
Eat 3D - Creating a Realistic Portrait in Maya
Eat 3D have just released an amazing tutorial on realistic portrait creation with Maya and Zbrush.