I am currently reading Steven Cohn's: "Reintroducing Macroeconomics: A Critical Approach."
The book is a heterodox economic critique of mainstream macro thought that is taught in today's classes. I hope to use the book along with Mankiw's mainstream text to help with a point-counterpoint way of teaching this fall.
I can imagine that will be difficult as I tried somewhat last year to broaden the discussion beyond the mainstream (to include some post-keynesinan ideas, contributions of psychology, ran some class experiments...) to some success, but also some confusion by the students.
I still don't know how best to broaden the scope while simultaneously cover all the necessary mainstream topics for the common final exam. It may be impossible; I don't know. Anybody with any thoughts please let me know. Look for my review of Cohn's book in a week or two.