Unlimited secondary and special weapon:
Enter the password CHOSEN1

Unlock all Campaign missions:
Enter the password GASMASK

Unlock All FMV:
Enter the password CINEMA

Completed bonus objectives for prior mission:
Enter the password YUB_YUB

Multiplayer level select:
Enter the password FRAGFIESTA

Battle Droid unlocked in Geonosis level:
Enter the password ROGERROGER

Wookiee unlocked in Geonosis level:
Enter the password FUZZBALL

Yoda unlocked in Jedi Academy:
Enter the password GREENMAN

Amidala unlocked in Academy:
Enter the passcode CORDE.

Programming team photographs:
Enter the password SAYCHEESE. This only works if you're already unlocked the Sketchbook.

Yub Yub Ewok Song:
At the options screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start.