Chris O'Dowd, star of the HBO/BBC mockumentary Family Tree -- brainchild of Christopher Guest and Jim Piddock (who's also in the show), answered some questions about the series and a variety of other topics. My favorite responses are below (and yes, I'm biased because he was kind enough to address my question!), but there's more where this came from at HBO Connect.
You can find Family Tree on HBO on Sundays at 10:30 p.m.