Richard Beck's Unclean: Meditations on Purity, Hospitality, and Mortality
is definitely one of my top books of the year--especially as one considers it from the angle of deep friendships between men and women. I blogged a little about it here and Richard interacted with my blog piece, here .
Richard thoughtfully interacted with the theory of "healthy boundaries" from an insider's perspective (social psychology). I greatly admired his boldness as Richard clearly articulated his doubts about healthy boundaries both in his book and in his blog.