I just had to go to Transformers and I quite liked it. Although you should better accept a "few" flaws in the plot. It didn't bother me that much as all I wanted to get out of the movie where a some good views of big bots fighting it out and the longs shots during the battles definitely made it worth it! The fights between the robots were sometimes a bit messy and the shaking camera is a bit cheap.
And there are quite a few good laughs too, which I didn't really expect. My girlfriend hesitated to go see it, but afterwards she found it quite a good movie.