A friend was watching Transformers 2 a while ago and spotted a pair of 4-frame blips of Barack Obama on TV monitors as the Decepticons are announcing their plans. So he is in the film after all. My friend thinks “it pretty much means that in its own subtle way the movie is anti-Obama propaganda. He’s mentioned by name as president, his administration is the bad guy trying to get rid of the Autobots to negotiate with the Decpticons, the military usurps his assistant, etc.”