Living Social now has a deal running for passes to the 2013 Northwest Chocolate Festival on September 21 and 22. I haven't yet written a posting about this year's event, but here's info about the 2012 event and you can read about this year on the Northwest Chocolate Festival website.
With this deal for more than 50% off, you can purchase a one-day pass for either Saturday or Sunday for only $17 (vs. $35), a weekend pass for $32 (vs. $65), or a family pass for two adults and two children for one day for $36 (vs. $75).
Note that a similar deal on Groupon is still available as well. UPDATE: the Groupon deal is no longer available.