A lot of pieces played in the movie are on the soundtrack and are incorporated into tracks that are under a different scene name. Of course their are some that aren't and are just played a little differently. You just have to listen carefully and you'll hear something on tracks and you'll think..."um that isn't in that scene but it sounds like that one part in the movie." I play this soundtrack repeatedly.
I hum various parts of this score throughout the day. I can't get it out of my head.
On a side note: I can't get the Iron Man 3 theme out of my head either. Unfortunately the entire score, while good, is redundant and sounds sometimes like a big loop. Just my personal taste and opinion.