If you want to pick apart the plots, think about when Vegeta and Goku wished that the Earth would be returned back to how it was before Babidi arrived... but why did Fat Buu remain? What about the blind boy that Buu healed? Wouldn't they have BLINDED him? Why is Goku blinding children? How did Fat Buu manage to arrive and why didn't Babidi and Dabura come back to life in their floating spaceship and arrive on earth again? How did they wipe the memory of Majin Buu without wiping their own memories, or at least the memories of humans like Krillin and Hercule? How does Trunks manage to go out in public with that hair? Why can't the Supreme Kai command everyone in the universe to give power to the Spirit Bomb that defeats Kid Buu, instead of just people on Earth? Why don't the Z Fighters wish for immortality so they can defend the Earth? Why does a Kamehameha kill Cell and a complete explosion doesn't? If Cell's head cell makes him regenerate, why did he regenerate when Goku blew his head off? If Saiyan's hair is always the same in their life, why aren't babies born with giant hair? How did Nappa get bald? Why did Frieza terrorize the universe if a crazy old man on a pathetic little planet make a bunch of robots ten times stronger than he was? Why doesn't it make sense? Why can't the voices leave me alone!?!