They will only work in Single Player or a Multiplayer Server that has codes enabled.

You Get	By Entering or Doing This
Enhanced Powers
God Mode	god
All Weapons & Armor	give all
Armor	give armor
Full Health	give health
Full Ammo	give ammo
An Item	give X (where X is the name of the item)
Force Heal	force_heal
Kill all NPC's	npc kill all
Get force powers, set to levels 1-4	setForceAll
Set all lightsaber abilities	setsaberall X (where X is a number 1-10
Spawn NPC	npc spawn X (where X is the name of the NPC)
Freeze an NPC (0 unfreezes them)	d_npc freeze 1
Game Production
Show Shaders	shaderlist
Record a Game	record X (where X is the name)
Stop Recording	stoprecord
Play a Demo	demo X (where X is the name)
Freeze a Game for X seconds	freeze X
Modes of Play
No Clipping	noclip
Invisable to Enemies	notarget
Dead Mode	undying
Dismembering w/ the Lightsaber (turn it on at the options menu after enabling this code)	g_saberrealisticcombat X (where X is a number 1-20)
Change color of the Lightsaber	sabercolor X Y (where X is 1 if the top blade, 2 for the other blade, and Y is the color red, purple, blue, yellow, green, or orange)