It's been a while since I've had the pleasure of watching a film that I haven't had the plot figured out by the previews. I also, haven't watched a movie in years that kept me guessing until the end, and then gave me a twist so that either of the two outcomes are possible without it having a sequal. I loved this movie because it wasn't just a bunch of blah with big name actors. There are some people who won't like this movie because they don't like to think about what is happening, they just like a story to unfold before them revealing all the little details. I assure you, this isn't one. I can't necessarily say it's not complicated to figure out, because for some it may be, but I will say this: I took my little sister-in-law to see this with me and, although I usually don't talk during movies, we were bouncing ideas off each other during the movie, so I wouldn't recommend seeing it alone or going with someone who will give up on the plot while you are trying to figure it out. I will definitely see this again, and probably buy it the day it comes out.
In general I am not a fan of sequels because they are NEVER as good as the first, and usually kill the story line in the sequel anyway. However, I will say that this movie was just as good as the first Iron Man. I can't say that it was better, but it certainly does hold it's own weight. Especially since Hollywood is trying to go the way of making a Justic League movie with all the characters, but are making the individual character movies first. (Hulk, Iron Man, Thor etc) The action was AMAZING and the story line kept my attention too. I will say this though, if you can, stay after the credits to watch a special hint on what they're doing next. (SPOILER ALERT: In the movie an agent has to leave to go to on a classified trip. The part after the credits shows where he goes)