All I can say is - it's one of the best summer flicks I've seen. I do have a few comlaints though - such as lack of screentime for my favorite decepticon - Starscream. I also wish Prime would have got some offense in on Megatron. I know they were making Megatron to look like a badass, but if Prime could get offense on Megatron in 86, why not just a punch of two for Christ's sake? And when and how the hell did Bumblebee get his voice back? Besides those minor complaints (well lack of Starscream is big complaint for me), I enjoyed it and I am looking foward to the sequel. Let's get Hot Rod, Soundwave, Shockwave, Ultra Magnus, and of course Unicron in one of the two sequels. Oh, and more Starscream.
Also check out this sector 7 promotion video for the movie. It features Grimlock, Kickback, and Laserbeak.
I hope Grimlock will make it into the franchise at some point.