Last night, the blackout almost turned into a party at many restaurants in Brooklyn. Lento's and Rice in Park Slope served food on the street. Further down, there was free pizza, and a long line at Louis G's. Cafe Mexicano served hibiscus punch with ice for as long as the ice lasted. On Smith St., Bar Tabac had oodles of patrons, and Pepe Giallo cooked until they ran out of perishable food.