A fun mythological adventure. I can see the appeal of this series, though it doesn't have me totally hooked yet (there are still 3 more books, though, that I need to read by the end of June). It has its moments--of humor, of bravery, of drama--but it lacks emotion. Even when Percy is experiencing something devastating, the words say he's deeply upset by it but the mood is still humdrum. The premise sounds very familiar--a boy who discovers he has a mythological/magical background has to prevent a Good vs Evil war, and takes with him his best friend (who was raised in this mytho-magical world) and a girl (who's an annoying know-it-all but really is very smart and brave). 
 So, yeah, I enjoyed this, and I can see why it's getting so much attention. The comparisons to Harry Potter, though, seem borne more of desperation than any flattering similarities.