An odd, but pleasant, tradition

At this law school, there is a tradition that at the end of the last class of the semester the professor makes a few closing remarks (i.e. "Thanks for walking with me down this winding path of Constitutional law...") and then all of the students applaud. I don't remember this ever happening at undergrad, but it's a nice recognition of the teacher's efforts. I remember one class last year where the teacher actually got a standing O. I wonder if any other law schools do this?