I just read and highly recommend the book Mudhouse Sabbath by Lauren F. Winner. It was an insightful and enriching book on the Christian faith and how it can possibly be enriched with eleven spiritual practices from Judaism.
The author converted from Orthodox Judaism to Christianity many years ago, but misses a lot of the traditions and spiritual practices within the Jewish faith. In this book she chooses 11 of these practices and traditions which she feels can crossover into Christianity and help Christians enrich our own faith and practice. Chapters range from topics such as the Sabbath, mourning, prayer, aging, fasting, hospitality, and weddings.
One of my favorite chapters (although, I loved them all and had several 'ah-hah' moments) was the one on Hospitality in which Winner states:

"Christians and Jews hold in common one theological basis for hospitality: Creation. Creation is the ultimate expression of God's hospitality to His creatures. In the words of one rabbi, everything God created is a "manifestation of His kindness. [The] world is one big hospitality inn." As church historian Amy Oden has put it, "God offers hospitality to all humanity... by establishing a home...for all." To invite people into our homes is to respond with gratitude to the God who made a home for us."

"In the Christian doctrine of the Trinity, we find another resource for hospitality. The Trinity shows God in relationship with Himself. Our Three-in-One God has welcomed us into Himself and invited us to participate in divine life. And so the invitation that we as Christians extend to one another is not simply an invitation into our homes or to our tables; what we ask of other people is that they enter our lives."

and

"God's creation gives us a model for making and sharing homes with people, but the reality of God's Trinitarian life suggests that Christian hospitality goes further than that. We are not meant simply to invite people into our homes, but also to invite them into our lives. Having guests and visitors, if we do it right, is not an imposition, because we are not meant to rearrange our lives for our guests - we are meant to invite our guests to enter our lives as they are. It is this forging of relationships that transforms entertaining into hospitality."

So - I just plagarized a whole lot (however, I have stated who the author is, what book it comes from and put everything in quotations - does this count?). Something about these passages within in this chapter really struck me. How God's hospitality to us is His creation - the land and landscape. Sky and sea. Trees, flowers and creatures. I've always known and believed that we are called to preserve and conserve the earth and all of his creation and that it is a gift to us but never as hospitality.
In addition, how many times do we invite people over because we enjoy entertaining, or because we're bored, or because it's just nice to have people over and have fun or quality time. These are all good and valid reasons to "hang out" with our friends and loved ones and even newcomers. But to think of it as being about hospitality and the sharing of our lives together puts a slightly new spin on it.It calls for thinking of these gatherings of friends and family more deeply and more meaningfully - even if it is just a game night or movie night - and because we are inviting them into our lives and not just our physical home! Don't mind me - I'm just chatting away here...
So that's just an example of a topic in this book - but there's so much more. Go out and get a copy today! (so cheesey I know!)