“This tutorial is designed to show most of the UV mapping techniques and tricks that I use day-in, day-out. This is more of a brief case study rather than a step by step tutorial, but it will give you, the viewer, an idea of the work flow I use when UV mapping something tricky like a human skull. I hope you’ll enjoy it and learn something.”
http://www.3dtotal.com/team/Tutorials_3/uvmapping_techniques/uvmapping_techniques_01.php