Check out Yahoo's upcoming Open Tech Nights next month:
Stacey Milman from the Yahoo! Developer Network passed this along:
"We're hosting a Yahoo! Tech Night at UW in February, the same week that our Yahoo! Hack University program is running. We're trying to get non-student developers to come out to this event and learn more about our new open platform and open search offerings."
February 19: http://php.meetup.com/49/calendar/9621439/
February 21: http://php.meetup.com/49/calendar/9621460/
These are free events and rumor has it there will be food and drink.