What's the blu-ray commentary like?

I was expecting a few more special features to be included in this release (i.e. the Making Carrie documentary), but I guess the director commentary is better than nothing. I just hope it's the kind of commentary where they actually talk about the filming of certain scenes (stuff like, "Oh, this scene was fun to film because of blah-blah-blah," or "there was originally supposed to be a scene in which this happened..."). Is it? What's it like? Any cool interesting tidbits you learned from it?