8/10. Absolutely loved it. This movie fired on all cylinders, and hit far more often than it missed. A very entertaining blend of serious adventure and cheesy science fiction, with a touch of human comedy. Whoever said this film lacks "wonder" or imagination can blow it out their ass. That it has in spades.
The story itself has enough twists and relevancy not to disappoint. Optimus Prime's character and presentation is almost note perfect, from his heart of a warrior to his realization that some conflicts and their reaction to it must be different on Earth. The compassionate, wise warrior leader to a T. Megatron was his destructive, power-hungry, totally evil self. Even Ironhide, Ratchet and Jazz had distinct characters, if only for a little while. Bumblee was fantastic. Nice little "homage" to his Volkswagen form in the car lot there. I'm sure that pissed off many a fan.
Almost everything with Sam works well, no doubt due to Shia Lebouf's handling of the material, which isn't bad to begin with. Megan Fox is attractive and energetic, if not much of an actress. The supporting cast doesn't disappoint, and Sector 7 was a nice, quirky twist on an old concept. Absolutely loved Frenzy.
The action was fantastic, the comedy worked surprisingly well, and the rendering of the Transformers themselves...wow. Most of what I've loved about the Transformers concept over the years was found in the film. Now we can look forward to a sequel with a larger leadership role for Starscream, the return/evolution of Megatron, and more Autobots from space, possibly in an Ark of some kind? I wonder if the whole "natural resources" thing will come into play, now that The Allspark has been destroyed? Maybe we'll see the Autobot's build themselves a base, and the evolution of Sam as their human contact.
My only complaint is that in places, the score is heavily reminscint of PIRATES OF THE CARIBBEAN and BATMAN BEGINS. But hey, it worked.