In NBA 2K12 for the PS3 and Xbox 360, there are several things you can unlock with some cheat codes.
To enter codes, go to Features and choose Codes. Enter the following codes to unlock the corresponding unlockable item/team.
2K China Team – Code: 2kchina
2K Development Team – Code: nba2k
2K Sports Team – Code: 2ksports
2K Visual Concepts Team – Code: vcteam
ABA Ball – Code: payrespect
Retro Jordan Shoes – Code: 23