I enjoyed it for the most part. It dragged a little, but the story line was easy to follow. I wouldn't let smaller children under 10 see it, don't think they'd understand much of what was going on.
It draws you in and keeps you there. The action is great, Robert Downey was at his best. I was a little disappointed by the ending and expected just a little more. But I'm sure there will be another in the near future.