iTunes can organize PDF files (and more)
Kirkville: Organize PDF Files in iTunes (Updated)
This is how Apple is distributing the liner notes to 'The Complete U2' on the iTMS. The article speculates whether this could lead to Apple selling magazines on the iTMS.
It would work for all kinds of periodicals... how about newspapers? How about comic books and comic strips? How about any book?
This is going to be a great way for me to organize the notes and slides that my professors put on their web sites next term. I can keep the notes/slides alongside the lectures I record with my iPod/iTalk. (I have a playlist for each course I'm taking / have taken)
I might even have to get a scanner so I can scan my written notes and keep them in my course playlists too.