Good book.
Good code examples.

Had the opportunity to meet Jason at JavaOne, and I can see his writing style parallels his personality. I have read the book as parts (that is reference) and am once again going back for a cover to cover review.

Would have liked a little more in-depth coverage of threads and some behind the scenes web interactions, but he has provided reference to where more detail can be found.

Not sure if I will go for the impending JSP book, how about a Servlet/XML book by Jason ?