Too add to my growing list, this week I bought Eric's "Compelling Conversations" book. Some may remember, I had posted a few weeks ago that I had an advanced student that I felt like I was running in circles with, not sure what to do next.
I downloaded some of the free .pdf's on the site and we went over two of them with great results. I supplemented the material with some I created to add reading practice with it. (The multinational entry on wiki.) Delighted with the results, I bit the bullet and just bought the book. I highly recommend it..