I could narrow the choices down to two courses:
1. My First Amendment course in Law School was facinating. I believe there are few topics more interesting than the history of free expression in the U.S. I also admired the instructor who taught the class. I thought he had a good deal of intellectual integrity.
2. In my Junior year as an undergrad I took a course entitled Sociology of the Future. That was 21 years ago. Many of the things that the professor spoke about have come to pass in my adult life since that time. It was a class that forced the students to consider ideas and concepts that we had previously never questioned or even deeply reflected upon.
I really liked both of these courses. They represented what a formal liberal arts education can be when it is at its best.