Bonus gestures - Successfully complete the following chapters to unlock the corresponding gesture:
Delete saved game data - While turning on the game, hold L + Select + X + B. Note: If you have a Game Boy Advance game also inserted, remove it first.
Hidden gestures - Enter the gallery sketchbook. Draw one of the following objects and they will animate and move onscreen: cloud, square, butterfly, butt (Japanese version), treble clef symbol, snake, tear, arrow, baseball, fan, ghost, window wiper, the letter "P", and a cherry (o^o).