Worst episode
This show has plenty of god-awful filler episodes, but I think the worst one was when they thought Kirara ran away. In the end, it turns out Miyoga was just borrowing her, but with Shippo's permission. Since he was half asleep, he had no idea what was going on. So, instead of punishing Miyoga like they should have, everyone agrees to beat Shippo up. Even Kagome, who usually punishes InuYasha, encourages it. Our heros, laides and gentlemen.
Math class is like the movie "Inception": Convoluted, long, & boring.