Theory about the switch from drama to comedy
He's a child hood friend of Danny McBride, who kinda got in with the Apatow crew and the McKay-Ferrell crew. Just because he made ultra serious films doesn't mean he doesn't possess a funny bone. In fact, the reality of most serious films is that between takes there's a lot of joking around, apparently. Same with horror. Supposedly the genre that takes itself the most serious, at least between takes, are action films.
Anyway, I think maybe he had some deep, dark, serious stories he needed to tell and once he told those stories he wanted to use his skills as a director to do some fun projects and has thusly turned to comedy. I love how involved he is with Eastbound and Down. I think it's an awesome breath of fresh air that basically 3 or 4 guys have made every episode of that series (so far).
Brian Peppers is my Homeboy