Matt Jadud, a CS prof at Allegheny College, has a great post up about the hows and whys of getting students to blog. Luke is going to be doing the same thing with his students this fall. I preach a similar sermon quite often, and think it's great to see more profs saying the same thing. It doesn't matter what you are teaching, getting your students into the habit of regular reflection on their learning is important. And the best way to encourage them to do this is to model it for them. Are you blogging your own teaching and learning?