Esperanza and Irwin embark on a virtual Happy Hour back in time to the bars and taverns we love, and the characters that inhabited them.   From the literati at the original Bobby Van's in Bridgehampton, with Capote, Matthiessen, Knowles and Plimpton to John Steinbeck at Barons Cove in Sag Harbor.  Deep in the woods of Springs, Jungle Pete's had Pollock at the bar with baymen and Bonackers, while Pete's wife Nina cooked venison delivered to the back door by neighborhood hunters.   The incredible daytime scene at Cyril's on the Napeague Strip with people 10 deep and a mile long created a rubbernecking logjam on the highway.  And Murfs, the dive bar we love in Sag Harbor, referred to by a former Sag mayor as "a place we've all been thrown out of at least once".  Yet another piece of the East End mosaic, the sense of place than has drawn so many for so long.