A piece featuring additional cast and crew interview snippets and behind-the-scenes footage. Directed & Produced by Josh Brolin. We find comments from Joel and Ethan Coen, Jones, Bardem, Graf, Brolin, Macdonald, production supervisor Karen Getchell, associate producer Dave Diliberto and actor Woody Harrelson.

It's actually a funny tongue-in-cheek mockumentary. From the film's collector's edition Blu-ray bonus features.

Here's Josh Brolin's real comments about Coen brothers:
Q: When other actors have described working with them, they’ve said they’re like one mind in two bodies. Is that the feeling you have working with them?

Yeah, but you have to understand I’ve done years of publicity on them. We all play up this thing - George does and I do - we all play up this thing about how weird and f*cking strange they are, and quiet, and all this stuff. But it’s really not. Like, Ethan said ‘I saw you on a talk show the other day when we were coming out with Hail, Caesar! and I felt so bad for you.’ Because there was a moment where I didn’t believe my own bullsh*t anymore. You tell the press things like ‘they’re really weird and they’re like one mind in two heads’ and [the press] are like, ‘one mind in two heads, that’s a good soundbite’, or whatever it is. You just lend yourself to it and you know you’re doing it. I just caught myself, in an interview in front of millions of people and I died in my own bullsh*t for a couple of seconds.

The truth of the matter is, they’re the most pleasant, collaborative, incredibly creative guys I’ve ever worked with. There’s nothing I would say no to. It could be horrendous and I’d still say yes. They could say ‘we’re going to do a Walt Disney story about pornography’, and I’d be like ‘great, let’s do it’. I don’t care. I just get it, it’s fun being with them. And it’s not necessarily fun, I’m not on the set laughing the whole time, but I very much appreciate their level of discomfort and what I think makes them great writers. That’s all they have you know.