January’s Mac User magazine has some links to great Photoshop resources…

Free brushes – http://myphotoshopbrushes.com/

Free Textures – http://photoshoptextures.com/

Lomography action –
http://www.emanueleferonato.com/2006/06/11/photoshop-lomography-photo-action/

Tilt-Shift action –
http://designedbyjoe.com/2008/11/10/free-auto-tilt-shift-photoshop-action/

and a great illustration website: http://drawn.ca/