Gotta hand it to my boys at Pixologic, they know their stuff.  not only do they have the number one sculpting program on the market, used in most major motion pictures and games, now they have an award winning FREE sculpting software.

From Pixologic's Blog:

Sculptris wins New Application of the Year in 3D World Magazine International CG Awards

Published on September 16, 2011 in Pixologic News. 1 Comment

We are delighted that Sculptris was voted the No.1 ‘New Application of the Year’ by an expert panel and the community in the 3D World Magazine International CG Awards!

More info at www.3dworldmag.com

“This award recognizes the best new asset-creation applications that have been released over the past year, which provide stable, useful and usable tools for the CG artist.”
-3D World Magazine

Download your free copy of Sculptris HERE

ZBrush’s Shadow Box modeling was also voted runner up in the ‘Software Innovation of the Year’ category.
To learn more about ZBrush’s tools, including Shadowbox, visit: www.pixologic.com "