This movie was fantastic. They played on Tony Stark's fight against alcoholism, which if anybody is a fan knows about the alcoholism.
They also didn't quite explain the particle accelerator, but it was a very good movie. If anybody can recognize that it is a particle accelerator then just ignore it because the physics is kinda weird.
The movie wasn't all about blasting everything to kingdom come either which was a good thing. They also set up the ongoing fight between Justin Hammer and Tony Stark that will always be there.
I also thought that they showed Stark and Rhodes' relationship more and their friendship.