I really enjoyed the Princeton series. The people who actually make the GRE produce a book too but it is kind of dry. The Princeton book is actually funny and helps take some of the stress off an impossible feat! Here is one on amazon: http://www.amazon.com/Cracking-2010-Graduate-School-Preparation/dp/0375429328/ref=sr_1_1?ie=UTF8&s=books&qid=1260642973&sr=8-1
