The first ever Seattle Gathering took place on August 3rd, 2010. Seven members of the PPC attended (Techno-Dann, Pretzel, VixenMage, Makari, Rosie, Gen, and Helen of Pylos), as did a friend of Pretzel's, who was proclaimed an honorary member for the day. Much fun was had mocking various bits of Seattle architecture; pedestrian traffic jams were created when cute dogs were spotted; and Rosie's stuffed octopus Kefka caused many a head to turn.
There is an official report over at Dann's LiveJournal: Gathering Report.