I enjoyed it but it might be unsettling for viewers who haven't haven't read the book. You really have to think about this movie as a play based on Sorkin's accounts.

You're thrown right into the action so you might feel like you're missing a bit of context. The thing about the book is that it is focused on some of the key people of the financial crisis, not the crisis itself. The movie embraces that and goes even further by removing a lot of the explaining that you find in the book, probably because it would have been really awkward to put in the mouths of people you expect to be extremely knowledgeable.

The result is an interesting, if sometimes overly dramatic, look at the players of the crisis and the way a system that we view as very impersonal and rigid is shaped by the people in it.

It's a good at giving you a sense of the timeline of the events, a good start if you want to get more in depth about the thing.

If you've been studying on the crisis, you won't learn anything new, but you'll probably enjoy seeing the movie. Because, if nothing else, watching the movie make Cox look like an absolute fool and Paulson almost lose it ("You guys are like the gang that can't shoot straight") was as satisfying as reading about it for the first time.