Those #&!*% boring books!

One major problem teachers have brought up is that material is boring. Although it is quite easy to find that material is boring it actually leads us to a much more difficult but important and useful question. What material is exciting? What coursebook do you know of that makes students excited to come to class? What books have made your class the most interesting class the students attend in their school? What coursebooks give the sleepers insomnia? What coursebooks are so much fun that students who have no extrinsic interest in learning English take your course just because it's so fascinating?