Press [Esc] to get to the main menu. Now type in the word
 DOUGMATIC so many times untill you get back into the game.
 Now the cheats are availble. Press [Esc] again and type:

 GIVEME - All weapons
 KILLEM - Kills all enemies
 LOADME - Unlimited ammo
 HEALME - Homing health
 PROTECTME - Invulnerability
 MOVEME - Choose level
 AGENTJ - Jump to Agent J
 AGENTK - Jump to Agent K
 AGENTL - Jump to Agent L
 KOKOX  - Invincible
 ALPHA1 - Addional Weapon
 ACOBRAG - Message "Alien Sucker ..."
 DKSOLK - Time

 You can play MIB as anyone (even yourself) !!!

 Just replace the files

 /art/3d/textures/head_f.bmp

 and

 /art/3d/textures/head_b.bmp

 with any head bmp (even a pic of yourself). Then use the cheats
 to play as Agent X and Voila - you (or ANYONE) are in the game!