First off, I never had any high expectations for this movie. I thought it looked silly and over-the-top. And I wasn't really that surprised.
The effects are good, and I think that Bumblebee was pretty cool. And the scene where all the transformers were surrounding Sam's house made me laugh hard.
But aside from that, I don't think there is anything to come for in this film. The action is (to me, cause I know a LOT will disagree) mediocre. It was just a bunch of generic robots fighting generic cops. It also seemed to take itself a little too serious, considering just how silly this concept is.
I will say this right now, I am no big fan of Shia LaBouf. But i think he did okay. Not "good", just okay. ut, DUUDE, does he ALWAYS STUDDER!?
I also think both characters portrayed by the actors mentioned above were pretty generic. So all in all, there are some good moments in this film, but as a whole, you won't miss out on anything. This was a mediocre film, so I can't really rate it any higher than 2 1/2/5.