21. Lupin's Riddikulus Lesson - Prisoner Of Azkaban
Sometimes it's hard to hear the Hogwarts students complaining about their lessons. It's like, come on, you guys go to a magical school where you get to cast spells and make potions and learn how to disappear in one place and reappear in another, while the rest of the world is learning math and grammar. Have a little perspective, if you please. Lupin's lesson with the boggart shows just how much fun their classes could be, and exactly how good of a teacher he was. Also, there's that moment with Snape stuffed into Mrs. Longbottom's ensemble, which is pretty much priceless.