There are reed-thin models playing with their food at the next table, leopard skin decking the room, and limos parked out front. Where are you? One possible answer is Café Nervosa, a casually hip Yorkville hangout. The name is borrowed from the coffee shop on TV's Frasier, with a wacky ambience all its own. The menu boasts nicely constructed panini, pizzas, and salads, and the portions tend to be generous (curious, given the you-can-never-be-too-rich-or-too-thin crowd).