Here are a bunch of Cheats from Dark Forces II: Jedi Knight and Star Wars: The Phantom Menace

             JEDI KNIGHT : To enter a cheat press t, then enter the code, for some codes press space 1 or space 0 to
                turn on or off
               raccoonking -gives you all force powers
               deeznuts -level up
               sithlord -makes you dark jedi lord
               imayoda -makes you light side jedi lord
               red5 -all weapons, full ammo
               jediwannabe 1 - makes you invincible
               eriamjh -fly mode
               yodajammies -full mana
               bactame -full heal
               slomo 1  -slow motion
               thereisnotry - next level
               wamprat -all items
               whiteflag 1 -disables AI
               pinotnoir 1-21 - type in a number between 1 and 21 to skip to that level
               5858lvr -full map
 

            The Phantom Menace : To enter a cheat press back space, and then type it in.
              iamqueen -turns you into
              iamobi -turns you into Obi-Wan Kenobi
              iamquigon -turns you into Qui-Gon Jinn
              iampanaka -turns you into Captain Panaka
              happy-makes weapons more powerful
              i luv to cheat-gives you all weapons and all ammo
              i rule the world- makes game harder