Bike to Work Week rocks! I have rode 2 out of 3 days so far. Unfortuneately it will be my last until next week due to morning meetings and home commitments to compete with getting to work on time.

Just changed my knobbies on my mountain bike to slicks, what a difference. I rode just as hard but had an easy 2-3 mph change in speed. If not for the headwind I probably would have set a new personal commuting record. Averaged 17+ mph for my 12 mile commute and easily reached 20 many times(that rarely happened with knobbies). My wife wonders why I don't just ride when I wake up, how can a non-athletic person ever understand the euphoria that comes with the xen of biking. I can't seem to put it into words for her.
My personal success story, I have converted a fellow teacher here at school to be commuting on bike as well. Take that Big Oil!