Everything about this movie is extremely well done. The sound design, the acting, the effects, and everything else is great. There are only a few things that were kinda bad in this movie, but they don't really ruin it. Potts (the assistant) is more annoying than she was in the first one. She was already annoying in the first one, but now she's got more screen time and screaming. Some of the action is a bit boring (people are fighting with the same technology again) and some of the dialogue is a bit predictable. This movie is extremely entertaining. Its not as good as the first one, but its definitely worth watching. There is an end-credits scene. Its a teaser for "Thor" which has already released. Thor is a much worse movie and I wouldn't really recommend it. Basically, this is a great movie that's slightly worse than the original. Go watch it.