Someone posted about this last year and I thought I'd bring it up again. It is a really fun time and also a great place to possibly meetup with friends you made and met at the con. Good food, games, demos, etc...
Here is some official info:
SEPTEMBER 17 & 18, 2005
11:00 a.m. - 5:00 p.m.
Uwajimaya Plaza
10500 SW Beaverton-Hillsdale Highway
Come celebrate culture and community with
music, dance, arts, crafts, food and more
check this site for more info:
http://www.jaso.org/events.9.05.html#festivaljapanSo, yeah, I hope to go. Some people were cosplaying as well. I just hope the weather is better this year than last year.