LEGO Star Wars II: The Original Trilogy [Xbox]

Passwords
Go to the bar with the elapsed game timer and percentage hologram, then go to "Enter Code"

Password - Effect
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UCK868 - Beach Trooper
BEN917 - Ben Kenobi (Ghost)
VHY832 - Bespin Guard
WTY721 - Bib Fortuna
HLP221 - Boba Fett
BNC332 - Death Star Trooper
TTT289 - Ewok
YZF999 - Gamorrean Guard
NFX582 - Gonk Droid
SMG219 - Grand Moff Tarkin
NAH118 - Greedo
YWM840 - Han Solo (Hood)
NXL973 - IG-88
MMM111 - Imperial Guard
BBV889 - Imperial Officer
VAP664 - Imperial Shuttle Pilot
CVT125 - Imperial Spy
JAW499 - Jawa
UUB319 - Lobot
SGE549 - Palace Guard
CYG336 - Rebel Pilot
EKU849 - Rebel Trooper (Hoth)
YDV451 - Sandtrooper
GBU888 - Skiff Guard
NYU989 - Snowtrooper
PTR345 - Stormtrooper
HHY382 - The Emperor
HDY739 - Tie Fighter
NNZ316 - Tie Fighter Pilot
QYA828 - Tie Interceptor
PEJ821 - Tusken Raider
UGN694 - Ugnaught

Infinite Studs
When in a double score area with another human player, kill them and collect their studs. Repeat this to gain the desired amount of studs. The amount lost will remain the same, while the amount gained after picking your partners up will be doubled.