I've contributed to a small number of books. One day I might even get round to writing one.
Content Design, by Sarah Richards (editor)
The Morning News Annual, 2008 (contributor)
The New Writer's Handbook, Volume 2 (contributor)
Your Life in Web Apps (short ebook in DRM-free PDF format) (author)
We’ve got blog (contributor)
Mac OS X Hacks (contributor)
iWork, The Missing Manual (technical reviewer)