Turns out Transformers have been on Earth at least since World War II. And it looks like they'll be with us forever, judging by this, the fifth film in Michael Bay's endlessly exploding film series about robots from outer space pretending to be motor vehicles. (By the way, we're not fooled by that any more, guys. There's no point pretending to be a Datsun. We know you're a giant robot.) This time around the Autobots and the Decepticons are fighting over Merlin's magical staff. ... No, really. This series has gotten too silly to even discuss.148 minutes PG-13.