This film is exactly what it promised to be, and more. You couldn't possibly know how transportive this movie actually is until you've seen it (especially in 3D). I plan on going to see it again, and I only do that on very rare occasions.
Iron Man was never one of my favorite comics- I always had a problem with Tony Stark's attitude. When I was younger I yearned for more traditional heroes, such as Superman. However, the older I have gotten, the more I am able to relate with characters such as Iron Man, because they are only too human. Robert Downey Jr. portrayed this character excellently. The journey his character goes on is well-played and well-paced.
While the beginning does drag a bit, it does not affect the overall feeling or success of the film. The casting was surprisingly good, the visual effects top notch, and the story well-written. This is one of the best comic adaptions every made.
While it has its problems, the film works very well as a whole, and was a remarkably entertaining experience. I would recommend this film to anyone that is even tempted to go see it- you will not be disappointed.