1.This is a famous phrase from the game Zero Wing said by the all mighty cats
2. In Warcraft 3: The Frozen Throne, if you type this in you automatically win the level (only in single player).
1.Captain: "somebody set us up the bomb!"
Cats: "All Your Base Are Belong To Us!"
note: the above is a shortened version.
2. Player: allyourbasearebelongtous