This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
Second: Sang Shin, has a complete list of tutorials on lectures on Web Services, that covers more than 80% of the objectives of the exam. I used these tutorials as the main preparation material for the exam. This man is impressive as he has deep understanding of Web Services (By the way, his works as Java Technology Architect at Sunmicrosystems)
Forth: The study guide by Ivan Crizsan and the Mock Exam by Maikili Zakin is a good source of information (Specially the last two chapters from Ivan book), and also if you look at Maikili Mock exam you will earn a lot of knowledge (Most appreciated for his efforts)
Some tutorials here and there to understand things I could not understand else where: