I forgot to mention this, but over the last two weeks, O'Reilly has put up a selection of my favorite hints from the new book -- one from each chapter. The first eight went up last week, and the second eight went online last night.
I took a bunch of new color screenshots just for the online articles, so in some ways, the articles actually look a bit nicer than the book (which is in grayscale).
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030604060327535