I've compiled a nice list of free photoshop brush tools for you guys, if you want to liven up your collection http://www.photoshopsupport.com/tools/brushes.html http://www.misprintedtype.com/v3/goodies.php http://getbrushes.com/photoshop/weather/anodyne-light-brushes.php http://pstutorialsblog.com/61/free-photoshop-brushes-resources-2/ http://angryblue.com/downloads.shtml http://www.magurno.com/ http://designfruit.com/jasongaylor/blog/?p=37
:O You forgot DeviantART's resource. Google "Deviantart photoshop brushes". (Don't think I'm allowed to post links yet)
DeviantArt has a lot of good tutorials and brushes as well, well thanks for your list +rep given for the information
More brushes: http://www.angryblue.com/downloads.shtml - one of the greatest collections i've seen http://www.magurno.com/ - another great website with very good collections, mostly objects http://designfruit.com/jasongaylor/blog/2006/04/24/43/ - Grafitti brushes http://www.psbrushes.net/ - a lot of brushes!!!