Let me get the bad out of the way. It wasn't worth it in 3D over normal to be honest. Sofa seats at the back were good though. Plus, there were moments where the 3D didn't quite work. A few scenes where there was visible 'ghosting' of things that should have come out 3D I guess but didn't.
The good. More enjoyable transformers action. Comedic moments were there aplenty too in order to show that the series doesn't take itself too seriously (e.g. the comedy duo, the chubber autobot).
The sad:
When Ironhide bit the bulllet.... Plus, it was sad to see the apparent end (as anything can happen I guess) of Megatron. He is still my favourite bad guy in the series even if here he was a shadow of himself.
Seven Pounds (finally). Not sure how I felt about it. I didn't like the way nothing was really explained until near the end...and it was just DEPRESSING as hell overall. *shrugs* Oh well.