What I'm miffed about [at least as far as the third movie is concerned] is that the teaser is actually pretty awesome and is a great setup for a scifi movie. Unfortunately, it is, in reality, a setup for the THIRD Transformers movie, which I have absolutely no interest in.
Also, why do they make a big deal about finding the crashed ship on the moon when they knew about, and had Megatron in cold storage, since the 30's?