For Men Only, by Shaunti and Jeff Feldhahn,  is another in the line of books directed at helping men understand women better.  It is actually a companion to For Women Only (which Shaunti wrote and presents at conferences), and arose out a response to that book.  That being said, it is a fairly informed read.  It is short and concise, choosing to focus on six main ideas: Reassurance, Emotions, Security, Listening, Sex, and Beauty.