I thought the story line and writing were great for Iron Man 2. The final battle was too short. It seemed like they were running out of time so they tried to get it over with too quick. The plot twists were well written and executed in this movie. The solution to the paladium in Stark's chest seemed to take a while to develop and resolve, but the solution was well worth the wait. This movie was a very good build-up to the next one. I just hope they can deliver and even more powerful and exciting Iron Man 3.