The Guardian has a nice interview with Wes regarding his style, his critical reception, working with children, and his frequent collaborators. Regarding the last, he says:
“I don’t think any of us are considered ‘normal’ people,” he says. “It’s probably more a family of crazy uncles. But there’s an energy that comes from people who are friends. Whatever chemistry is on set is going to be there in the movie, and you want some electricity that you don’t really control.”
The rest of the interview can be read over at The Guardian.