I have been experimenting with Blender again this weekend. He has produced some really nice modern sculptures. You can view the sculptures here in Second Life, or take a look at flickr. You can download Blender here. Blender is a 3D graphics application released as free software under the GNU General Public License. Blender is available for a number of operating systems, including Linux, Mac OS X, and Microsoft Windows. You can look at a vast array of Blender tutorials here.