I used the Kaplan home study program, BRS Path, BRS Phys, BRS Pharm, and Clinical Neuroanatomy Made Ridiculously Simple (adequate enough for the neuroanatomy portion of the test!).
My exam was pretty typical of what others have stated. Gross anatomy was fairly obvious, neuroanatomy wasn't bad, physiology could be tough sometimes, and the biostatistics absolutely were horrific!! I had some biostats questions that we never covered in epidemiology, biostatistics, or evidence-based medicine courses. Then again, I attend a problem-based school, so one could argue it's just my fault for not learning it!
Now I get to play the wait game until I get my scores. By the way, go to the NBME website, click on USMLE, and then click on the link for applicant status. You can check to see when your scores were reported so you will know when to anticipate them in the mail. (Too bad they won't report the scores online!)