It's a lot like p*rn, only socially-acceptable: anyone who goes for plot or quality acting is kidding themselves. They are there for:
1) Big freaking robots beating the tar out of each other 2) Megan Fox
On that front, the movie delivers.
It felt like makers saw what folks liked in the first one and just took it to ludicrous extremes. And I actually thought most of the robots were *less* developed than the previous film.
Pros: Jetfire was cool. Almost Monty Python-esque. Devastator looked good at least.
If you're a Transformers fan, you're gonna see this. Bring earplugs and Tylenol though.