The following are known Gecko Codes for Attack of the Movies 3D on Nintendo Wii (Wii).

Lives don't decrease [giantpune]
0400B460 60000000

Ammo doesn't decrease ( all players ) [giantpune]
04025098 60000000

Health doesn't decrease after the first hit [giantpune]
0400B718 60000000
0400B730 60000000

Unlock Cosmic Combat [giantpune]
001A7484 00000000

Unlock Into the Emperor's Tomb [giantpune]
001A7514 00000000

Unlock Robot Rebellion [giantpune]
001A75A4 00000000

Unlock Deep Sea Danger [giantpune]
001A7634 00000000

Unlock Graveyard Gunfight [giantpune]
001A76C4 00000000

Inf HP [Skiller]
0400B714 C01F0CF8
Note: giantpune found the section

Huge Amount of Score [Skiller]
C201E3F8 00000003
3FE04B18 63FF967F
93E30218 7C7F1B78
60000000 00000000

Weapon Mod [Skiller]
C201E0E4 00000002
3880000? 8003024C
60000000 00000000
C2024B58 00000002
3800000? 9003017C
8003017C 00000000

Digits
0 = Gun
1 = Uzi
2 = Ak47
3 = Gattling gun