Holy crap, this is my new favorite show on TV. It's about an ex-baseball star who moves back to his hometown in NC and tries to work on becoming a star again. It's quite possibly the darkest comedy show I've ever seen: the star is an open racist, homophobe, cokehead, womanizer, etc. a lot of which he does in front of young kids (he takes a job as a substitute gym teacher).
Will Ferrell produced it and the main dude, Danny McBride, was in Pineapple Express, Tropic Thunder, and The Foot Fist Way, so you might recognize him. But do yourself a favor and check it out, as long as you realize that it takes full advantage of being on HBO (lots of nudity, pretty much constant swearing, drugs, violence, etc.). I think I'm making it sound harsher than it is, it's very very funny.