I started picking up Blender (an open-source 3D modeling and animation program) over the weekend, and after getting over that fact that it has one of the funkiest user interfaces I've ever encountered, I've come to like the program a lot. Here's my first go at modeling a simple 3D face...IN 3D!!!!
And here's the quick sketch that I was working off of:
I haven't gotten to the point of actually rigging the model for animation yet (i.e. adding a posable skeletal structure), but I'll be trying to tackle soon. Until then, please be sure to recycle your 3D glasses on your way out of the blog.