My first economics course in college, nearly 50 years ago, was excellent. The professor was an outstanding lecturer and made the material in the textbook (which he also wrote) come to life. It was one of the few college courses that benefited me throughout my business career and life.
My experience as well. The other one that surprised me was statistics, dry as all git out until you realize it reveals to you how often you're being lied to. Then it's fascinating.