The University of Westminster's Centre for Parallel Computing has opened up a 250-cpu grid for use by the general public to render projects created in the open source 3d creation program, Blender.
http://www.cpc.wmin.ac.uk/cpcsite/index.php/Main_Page
http://rendering-portal.cpc.wmin.ac.uk/
from
http://technocrat.net/d/2008/12/1/55051