Dragon Ball Z: Buu's Fury/Secrets

Kai Store
To access a store containing some of the best items in the game, visit the Kai's planet once you beat Buu and work your way to the right-most map and break through the crack in the wall. In here you'll find great items for leveling up, such as the Kiloton Gloves/Boots, and great armor with super high endurance.

Move Talking Screen
While in a conversation press the L or R button and the talking screen will go up and down.