Filler sagas, when the anime get's too close to the manga plotwise, the anime writers employ this to stall time to get the manga farther away. Most ends up crap, but others are tolerable. What are your most and least favorite filler sagas of anime?
Most: Garlic Jr. saga, Dragonball Z and the episode of Naruto where they try to remove Kakashi's mask.
Least: Konoha 11 saga, Naruto