Night at the Museum: Battle of the Smithsonian Cheats for Nintendo DS
Also on: Xbox 360
During a level hold L + R, Left, A, Right, Right, Y to change Larry's whole player package. He will now have ALL the ingot powers without having to use the bottom screen. There will also now be penty of different combinations you can use to access new moves and when you hold down the flashlight button for several seconds it will now shoot cannon balls.
Also on: Xbox 360, check out those pages for more help with this game.