Hello there, im not sure if you have already visited these links but ill post them anyway, I think they are far to important to miss out on :)
www.thehumanhead.com - A full tutorial on the concepts and theory of modelling a realistic human head.
http://cube.phlatt.net/forums/spiraloid/ < undoubtebly the best
high-end 3D forum I have ever seen on the net. The ppl on this forums are the leaders in the industry, and they're right there to give you excellent advice.
http://maxrovat.sns.hu/subdiv/ If your into your sub-d's this is the place to start.
http://www.fineart.sk/ Human body references, also an excellent resource for concept art.
-Martin-
Excellant, excellant links!
I've spent hours at that Fineart.sk site before.. It's definately a great resource for reference material on human anatomy, and also animals, and manga characters etc... brilliant site.
That 3D Forum is awesome too!.. some brilliant human modelling in there.
Anyway, I've put those links in the modellers section.. thanks
Oh yeh. subdivision surfaces - exactly what I was looking for actually.. I've been meaning to learn all about that stuff. hehe