FamFamFam has released a new icon pack called Silk. This icon pack contains over 700 16 by 16 pixel icons in PNG format. Thats right, over 700 of em. The icon pack is free and can be downloaded here. If instead, you would like to view every icon contained within this pack, click here.
Thoughts and Insanity From Jeff 
I’ve used Silk’ icons to make my WordPress Admin Panel a little less dull. I’ve also implemented them in the left hand navigation on my site. Nice work, FAMFAMFAM. :)
@Chris ThomsonNice. I downloaded this pack because I know there will be a time when I’ll need an icon and since there are over 700 of them in this pack, you can’t go wrong by having this on your hard drive.