As its name implies, it's a hamburger joint. But what other burger-n-bun shack offers Saturday afternoon tea (Long Island, though), a champagne Sunday brunch, prickly pear margarita parties, Sex and the City viewing parties, service-industry happy hours, karaoke, dollar disco daze, gay lifestyle festivals and fashion shows? Only the same place that, alongside its certified Angus beef burgers, proudly serves Dom Perignon. What better to complement a bleu cheese and bacon burger than a bottle of the $150 sparkly? It adds a certain joie de vivre to a chile size smothered in onions, or a meaty mushroom burger loaded with Cheddar and jack. Mary, you make us proud.