Sausage Head said:
dark of the moon? wtf does that mean?
It is the side of the moon that the sun doesn't shine on.
In the film, an ancient autobot ship called The Ark, which has Sentinal Prime and many others on board crashed there and is found by Neil Armstrong
It also means that there is a dark side or evil in everyone, as is seen when Sentinal Prime, the most heroic and revered Autobot sides with the Decepticons to try to end the war, murdering several autobots including Ironhide and the twins (Who were annoying anyway)