Having nothing better to do, I rewatched Transformers: Dark Of The Moon yesterday.
First of all, as we've come to expect of this franchise, the VFX porn is impressive (although the lengthy action scenes get a bit tedious). The story... not so much. It manages to be simplistic and messy at the same time.
This installment, just like the previous two, has some wacky character stuff (fortunately without the blatant racism of Revenge Of The Fallen, although some overly sensitive people may object to Deep Wang and the "assholes" with British accents ). For some reason, this time it felt like an attempt at emulating the Coen brothers' movies (maybe it's because of Frances McDormand and John Turturro). A not very successful attempt.
While it was nice to see him, the cameo by Buzz Aldrin felt a little forced. Seems like he was there only to give some dignity to the silly concept of space robots that turn into cars. A good story would've served that purpose better. Leonard Nimoy's appearance could also be considered an attempt to please the geeks, but it still makes much more sense (he has some history with Transformers and his character is crucial to the plot).
Just like Megan Fox, Sam's new girlfriend serves mostly as eye candy. I imagine Michael Bay is not very popular with the feminist crowd.
So basically, to sum it up, it's not a good movie. An improvement over Revenge Of The Fallen, but still not good. It failed where The Avengers succeeded.
So honor the valiant who die 'neath your sword
But pity the warrior who slays all his foes...