Here are some cheats and tips for the game All-Star Baseball 2004.
Taunt crowd:
When playing an away game, hit a homerun and click the Left Analog-stick when
running the bases to taunt the crowd.
Homerun celebration:
Press R when you are running the bases after hitting a homerun. Your player
will blow kisses to the crowd. If you continue pressing R, your player will
jump on home plate.