Fight Night 2004 
  
Xbox
  

All venues:


  At the main menu, highlight My Corner and press Left, Left, Left, Right, Right,
    Right, Left, Right, Right. 
Big Head mode:


At the main menu, highlight Play Now and press Left, Right, Left, Right, Left,
Right, Left. 
Small fighter:


  At the main menu, highlight Play Now and press Left, Left, Left, Right, Right,
    Right, A.
Big Tigger:


  Select My Corner/Record Books/Most Wins-Boxer, then press Up, Up to unlock
    the middleweight Big Tigger. 



 
 Thanks to Revolution readers Sugar Ray Marv and Tweety!