I heard really bad reviews about Transformers 2 but I had to see it for myself.
1. The twins were really annoying.
2. I didn't like the fact people would show up and be like "HERE I AM! I'M THIS GUY!" and then you wouldn't see them for another hour into the movie.
3. Starscream still looks like a robot version of the hunchback from Notre Dame. I was expecting him to yell out "SANCTUARY" at any time.
5. Sam Witwicki's hand injury
6. There wasn't much interaction with the original cast/autobots.