I was just looking to pass, so I'm happy with any score over 62%. I studied for about 15 hours total using the Head First book. I knew JSP and Servlets pretty well from working with them over the last year and a half, and had written a couple of Filters before. The rest of it, like EL, standard/custom actions/tags, security, listeners, I crammed in about a day using HFSJ. Thanks for writing a great book.
Now I'm going to take the SCBCD. I'm sure it will take me much longer to prepare for this one, since I have never done EJBs before. However, as usual, I just want to pass, and I'm not looking to ace it.