And some more. Some of these sites I've highlighted before, but thought I would put them in this list just in case someone missed them.
SHARE SOME CANDY
A collection of inspiring design finds and art.
A community of printers and artists dedicated to preserving letterpress...free ornaments too.
LIBRARY OF CONGRESS
An absolute amazing digital library.
An online magazine that delivers useful and innovative information for designers and Web developers
Logo design trends, articles, resources and more.
A huge resource of desktop wallpapers and icons for download shared free by a ton of artists.
A tool to help you recognize a font that you don't know.