I recently started using
ZBrush, a 3D modeling program designed for simple and intuitive production of high resolution models. I'm using this now for a high poly version of a game character model I've been working with for
3E Games. I've been looking at some of Pixologic's video tutorials and experimenting with brushes using a tablet.
Here I just took a model that came with ZBrush, subdivided the faces and started playing around, adding stubble, wrinkles, veins, and just editing the proportions a bit. I was pleased and surprised with the results after just 10 minutes or so.
Now that I know what I'm doing it's time to move on to my low poly model!