Here is a list of websites i frequent the most but this isn't all of them i will be adding more as i find them

http://planetrenders.net/
#1 source

http://simple-renders.com/

http://animerender.com/forum/index.php?act=module&module=gallery

http://www.premiumrenders.com/forums/index.php?act=module&module=gallery

http://sneakybaron.com/index.php?cat=3

http://www.thepluginsite.com/products/photogalaxy/index.htm

http://www.gamersgallery.com/

http://www.3dshop.com/

http://gamerenders.com/

http://s4.photobucket.com/albums/y132/UG_renders/?start=0

http://ffxihaven.ffshrine.org/ffxi-art-face-renders.php

http://www.clantemplates.com/renders/gallery/

http://www.iphotoshop.org/flash.html

http://www.thedesignworld.com/renders/

http://s19.photobucket.com/albums/b163/Render619/

http://s20.photobucket.com/albums/b202/render619-2/

http://www.render.ru/gallery/

http://www.sigoftheweek.com/

http://s20.photobucket.com/albums/b202/render619-2/

http://s4.photobucket.com/albums/y142/SJM_18_MI/renders/videogame/