I love hearing the backstory of how movies are made: how the team of actors come together, the special effects and challenges or dangers of pulling them off; putting the score together during edits, etc. All that stuff that comes on the back of the DVD.
One of the most fascinating things to me is the timing of some of the shoots. So out of sequence (though not random).
Did you know in the first Harry Potter movie, the first scene shot for the first film — was the "goodbye" shot of the movie? Harry (Daniel Radcliffe) and Hagrid (Robbie Coltrane) meet at the train and embrace. Interesting, don't ya think? Of course, after editing, that scene was put in it's proper place so the flow fit.
Whether writing a blog, or a book, or a blog-to-book, it's quite alright to begin somewhere else besides the beginning.
…and hey, Why Not?