In this alternative look at Japanese life, history and culture, Ben Stevens looks at the good, the bad and the plain weird from a Westerner's viewpoint. His book is an A-Z that covers all aspects of Japanese life.
Choto chapters outline the wheres, whys and "wa"s of Japanese culture and history. It's a cheap Kindle download and was an entertaining and informative supplement to a recent trip.
Haven't gone through the whole thing, but i think it's pretty cool, cultural references A to Z. Fun stuff, and not the super common what is a bento kind.