Concept-Based Units

I'm really excited about the idea of concept-based units and lessons! I've been reading our book Concept-Based Curriculum and Instruction by H. Lynn Erickson, and there are a lot of great ideas in it. I think it's going to be difficult for the idea to catch on, because it's so easy to just teach facts, and never articulate the bigger ideas and concepts we want students to come away with. I really wish I had read this far in the book before I designed my last work sample. I think I would have been able to design the material so it was much more relevant to students, if I had. What have you all thought about the book? Does anyone else see the potential in the application of this material?