If you're in the Portland, Oregon area, time is running out to get tickets for the presentation by Sex at Dawn co-author Christopher Ryan. The event is Wednesday, November 2nd at the Bagdad Theater.
This looks to be a fun evening talking about human sexuality: why we mate, why we stray, and what it means for modern relationships. And there will be a Q&A session afterward, which should be fun. I'm personally looking forward to it like whoa. Tickets are $20, and available at the venue or online here.