Originally Posted by Memorix
it's exactly like what happened to Naruto. They don't know when to stop so they try to keep the story going with random scenes and flashbacks just to make some money.
i think that the "pendulum arc" was kinda rather appropriate since it showed few important things like Urahara's past and why he's not in Soul Society considering his skills and talent, and where the Vaizards did came from. So i don't think the "pendulum arc" was just some random flashback. . . though they did show it in a kinda awkward situation. . .