“Boardwalk Empire” is a new HBO series, which premieres this Sunday. I haven’t seen it, so I don’t know too much about it except that it’s based on a true story set in Atlantic City, once known as “The World’s Playground.” The buzz around “Boardwalk Empire” is, well, the best kind of buzz a new show could ever want. I have seen the promos and they have a sizzling energy that simply crackles. Excitement is in the air. Someone better warn Snooki and the whole lot of them at the “Jersey Shore” that the antidote to their idiocy has finally arrived.