Oh, come on, a lot of people know of Michael Bay, not as many as know Steven Spielberg obvioiusly, granted, but I guess they're calling it a Michael Bay film because he's producing. Steven Spielberg is only the Executive Producer.
You'll know Bay though, he's famous (or is that infamous?
) for producing high octane popcorn movies with no depth to them, the likes of Pearl Harbor, Armageddon, Bad Boys. Though lately he did do The Island which started off quite inteligently before degenerating into the usual Bay style explosions and high speed chases.
I don't mind his films in general (with a few obvious exceptions
), at least you know what you're going to get. Lots of action.