Austin loves its festivals, and we have a number of fine ones - Aqua Fest, Eeyore's Birthday Party, Old Pecan St., Fiesta at Laguna Gloria, the SXSW Music Fest - all have their seemingly permanent places on the city's social calendar. But the one that really captures the spirit of the city isn't an organized festival at all, but an impromptu city-wide celebration of ... well, of celebration itself.
