I went to a new dentist today in Westwood. We should all read Alan Blinder's Journal of Political Economy paper on the economics of tooth brushing (Volume 82, issue 4, 1974). Near the dentist's office in the hallway there was a box, the sign on the box said "This box does not contain drugs or money. It does contain blood and urine samples." This information convinced me not to open the box.
If you need some excitement in your life, take a look at this urban economics conference. I will see you there.