An iPod Library
by Hadley Stern
Related link: http://www.ipodlibrary.com
The iPod Library is a great idea! While you wouldn't want to read War and Peace on your iPod, quick reference material is great to peruse while listening to tunes on the subway. There isn't much content yet but hopefully this will grow.
Would you read a book on your iPod or is this overkill?
VoodooPad exports to the iPod
Worth nothing: VoodooPad for MacOS X can export it's format to iPod notes, effectively enabling you to store your personal wiki (or whatever you want to call it) into a hypertext format book on the iPod.