Do not watch:
Dear Zachary: A Letter to a Son About His Father - This documentary is devastating enough for viewers without a family or impending parenthood. It’ll make even the most emotionless person cry bucketloads. So I don’t even want to think about what it would do to me now that I’m about to have a son of my own. If you’ve never seen it, I can’t tell you much about why it’s so tragic, but I do recommend you watch it as early as possible, no matter how far off you are from settling down. And if you already have kids, well, pick up a large crate of tissues before you dive in.