Hey, in Lego Star Wars I saw something about a secret clone wars level with Ki Ad Mundi that could be unlocked by doing something, but now that I have the game I can't find any info on this. Anybody know something?
(I think it was the clone wars cartoons that was the level)

Hmm...

... try gameshark.com, they might have walkthroughs and secrets.

Go to Dexter's Diner and select "Codes" to enter the following:

H35TUX Unlocks Darth Maul for Free Play
4PR28U Invincibility
MS999Q Silhouettes
YD77GC Purple
RP924W Moustaches
LD116B Minikit detector
PUCEAT Tea cups
SHRUB1 Brushes
IG72X4 Big Blasters
L449HD Classic Blasters
NR37W1 Silly Blasters
BEQ82H Princess Leia
L54YUK Rebel trooper
A32CAM Darth Sidious
VR832U Disguised Clone
MS952L Mace Windu (Episode III)
RS6E25 Clone (Episode III Walker)
N3T6P8 Clone (Episode III Swamp)
BHU72T Clone (Episode III Pilot)
ER33JN Clone (Episode III)
SF321Y General Grievous
ZTY392 Grievous' Bodyguard
14PGMN Count Dooku
EUW862 Shaak Ti
CBR954 Kit Fisto
DP55MV Ki-Adi Hundi
A725X4 Luminara
LA811Y Bobba Fett
PL47NH Jango Fett
XZNR21 Super Battle Droid
LK42U6 Battle Droid (Geonosis)
19D7NB Geonosian
F8B4L6 Clone
92UJ7D Padme
PP43JX Royal Guard
DH382U Droideka
EN11K5 Battle Droid (Commander)
987UYR Battle Droid
KF999A Battle Droid (Security)
R840JU PK Droid
U63B2A Gonk Droid