UPDATE - December 27, 2007 - Please consider checking out Chakram 2 found here [link]
which is an overhaul of the entire set. Thanks.
My latest set. Download them, they're awesome.
Includes Dock Icons, Drives, Folders, Filetypes, etc.
My site: [link]
I should be getting paid for these! Oh well. A good portfolio is invaluable.
Update: 4.6.07 :I added the .ICN format for the OSX users.