I used the Accredited Agile Project Management Foundation (Scrum) course to help me prepare for the PMI-ACP exam since there is no specific course for that here. I struggled through every single episode but was annoyed by both Jo and Cherokee and all the side chatter during the course. Fast forward to yesterday when I sat for the exam and I can think of at least a dozen times during my 120 question test where I mentally remembered a disagreement Jo and Cherokee had, or another side bar moment that helped me remember key information and easily pass the exam.
So tip of the hat to Jo and Cherokee, I will never doubt your learning methods again, much more memorable than reading the dry PMBOK guide and other resources.