I've been attending the Oregon Brewer's festival since 1993. It's the last weekend in July every year. This year I found the North American Organic Brewer's Festival that was held in Portland about a month before. I'm wondering how many more of these I don't know about. Is there a calendar of these events on the AHA site anywhere?
While it's not homebrew, these crafty guys come up with some good beers too.