This week's book giveaway is in the Other Open Source APIs forum. We're giving away four copies of Storm Applied and have Sean Allen, Peter Pathirana & Matthew Jankowski on-line! See this thread for details.
I havent used AspectJ with Tomcat, but sometime back i had tried AspectWerkz with Tomcat and it had worked great. Had tried out a load time weaving of a small web application. Here are few tutorials for the same: