i should add
http://www.3dbuzz.com/vbforum/sv_home.php
to the list. in their “MS - Maya ADP” - “Goblin Head ZBrush Videos” section, the instructor goes into immense intense detail modelling a goblin in photorealistic detail.
the character looks like a cross between “Goblin OktoberFest” and “Goblin Folsom Street Leather Fair”, but once you accept that, the instructor gets a little carried away and demonstrates a very effective Maya-ZBRush-UVLayout-Photoshop workflow.
he shows clearly how to take ZBrush generated detail back into Maya.
UVLayout is a program from these guys
http://www.uvlayout.com/