Below are some codes that can entered at the "Input Code" Screen.

Password	Effect
OSSUS	All databank entries unlocked
KATARN	All Force Powers Unlocked and Maxed
ADEGAN	All saber throw ranks unlocked
JOCASTA	All Talents Unlocked
LIGHTSABER	Amplified Damage
RAGNOS	Combo Unlock
TK421WHITE	Gets you a white empire soldier in your costumes list
MINDTRICK	Makes levels mirrored.
EXARKUN	Maximum Force Push. Note: disables saves and may block some unlockables
SAZEN	New Combo
KITFISTO	New Combo
MASSASSI	New Combo
FREEDON	New Combo
LUMIYA	New Combo
MANDALORE	Play as General Rahm Kota
PROTOTYPE	Proxy skin code
BLACKHOLE	Shadow-Trooper costume
TK421BLUE	Storm-Trooper commander costume
HURRIKANE	Unlock all Lightsabre Crystals
ADEGAN	Unlock Lightsabre throw
MARAJADE	Unlocks a New Combo
SOHNDANN	Unlocks all 32 costumes
MOLDYCROW	Unlocks All Force Combos
VICEROY	Unlocks Bail Organa Costume
DANTOOINE	Unlocks Ceremonial Jedi Robes
PHOENIX	Unlocks Incinerator Trooper
HOLOCRON	Unlocks Jedi Adventure Robes
WOOKIEE	Unlocks Kento's Robes
YADDLE	Unlocks new combo
FERRAL	Unlocks Scout Trooper Costume
SNOWMAN	Unlocks Snowtrooper
BRUTALSTAB	Unlocks the devastating Lightsaber Impale.
HARDBOILED	Unlocks the DRUNKEN KOTA costume
KORRIBAN	Unlocks the Sith Stalker Armor