Aaron Gustafson/FlickrLike a beacon of hope.We know it doesn't make sense in a city where the sweltering starts with the autumnal equinox, more or less, but there's something about the slipping away of August that feels like the end of a summer that never was. (Poignant, right?) The last thing you want is to be stuck at home after a night of crappy TV, with the inexorable start of the 11 p.m. news signalling a quick slide into Tuesday morning's grind. That's why the late-night happy hour