Iron Man II was pretty entertaining.I can't say it was as good as the first, but it had great action sequences and special effects. I think where it fell a little short was in the area of character arc. While in the first movie, Tony Stark went through some character change, in this one he did not. But I must say that I did like the Iron Man II villain more than the money grubbing business partner from the first. Here's a rundown:
With the world now aware that he is Iron Man, billionaire inventor Tony Stark (Robert Downey) faces pressure from all sides to share his technology with the military. Tony is reluctant to divulge the secrets of his armored suit, fearing the knowledge will fall into the wrong hands. With Pepper Potts (Gwyneth Paltrow) and ``Rhodey'' Rhodes (Don Cheadle) by his side, Tony must forge new alliances and confront a powerful new enemy.
Overall, it is worth watching. The role of SHIELD is increased in this movie with much more information on the development of the future Avengers group. (Don;t forget to stay for the bonus scene after the credits!) Overall, it was a good popcorn movie and hopefully a good enough bridge to the other avenger prequels. It is rated PG-13 for some language (including a "bleeped" f-word) and violent superhero combat.