So I found this which I think is pretty cool, some hardcore fan went thru the entire trailer and using the annotations, he stops on each new scene for a few seconds and explains which part of the movie the shot(s) is from, with it either being very obvious, or at least educated guesswork by the user here and general fan conversation he's seen online.
http://www.youtube.com/watch?v=fpqT0WK358w
He did it for the previous trailer as well.