AspectJ in Action, second edition is just published. You can get sample chapters, source code, and more from the book's web site. You may especially want to read a real world perspective of AOP.
This book took over 3 years to get from proposal to completion and I am glad to have it published finally. It was a lot of work with updates and re-updates, but I am pleased with the end results.
Now that I have taken the dust off my blog, I plan to blog more steadily.