guys take a look at this new great 3d modelling tool, zbrush 2
www.pixologic.com
its a very cool software having a new approach to 3d modelling. in this tool, u actually sculpt your 3d model which makes it easy for u to make face models and other things. it also has one more great feature called zsphere in which u specify an outline of ur model and it converts it into a mesh. check out the site for more info.