The Lightning Thief (Rick Riordan)

My D&D friends recommended this book (actually, the series that it begins: The Olympians). Though it's YA, it is still a fun adventure, bringing the classic Greek pantheon into the modern world to seriously mess with the life of a dyslexic, ADHD, troubled New York kid. The story has everything: major gods (Zeus, Poseidon, and Hades) assorted secondary gods (Ares, Chiron, and Dionysus) plus hell hounds, furies, satyrs, fates, and so forth. I enjoyed the ride and will read more of the series.