Have you ever changed jobs and found yourself on "auto pilot" heading for your old job? Or taking until mid-January to write the correct year on your checks? As instructors I think we sometimes also flip the auto-pilot switch. We need only think back to some classes we had in past years to recognize the huge difference between an interesting, engaging, educational session -- and a 50-minute rote snooze fest. Our greatest assest as teachers is a fresh and everchanging perspective on our subject matter. You should have your syllabus and class notes cleaned at least as often as your teeth.