Here are some cheats and tips for the game NBA Showtime: NBA On NBC.
Sound test option:
Successfully complete the game under the easy difficulty setting. Note: This
also unlocks the normal difficulty setting.
Model option:
Successfully complete the game under the normal difficulty setting to unlock
model mode. This option allows all of the character models to be viewed.
Note: This also unlocks the hard difficulty setting.
Action option:
Successfully complete the game under the hard difficulty setting. This option
allows all previously unlocked animation sequences to be viewed again.