This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
"Core J2EE Patterns" is a good book. I think the design patterns in this book are available in the online in the java blueprints but they also discuss some other design considerations in the book. "J2EE Design Patterns Applied" puts these patterns to use.