Various cheats
  
Unlock Cheat Gnome:
     Press Left, Y, Down, A, X.

Max Physical Skill:
     Press L, R, A, Down, Black.

Max Mental Skill:
     Press L, B, A, Black, Down.

Max Artistic Skill:
     Press Y, Down, Black, A, B.

Acquire Skill:
     Press L, Black, Right, X, Left.

Power Social:
     Press Down, Black, Right, X, Left.

Team Photo:
     Press Up, Down, X, Up, Down at the Credits screen.