The 26th annual Contact conference was held in April 2010 at NASA Ames, in northern California's Silicon Valley. About 150 people participated, with many excellent speakers, plus a traditional-style COTI first-contact encounter.
My photos are here.
Scroll on through. Related web links, if available, are below the images.
Here's an update. As of late 2010, the old Public Affairs building was history. It's now a paved area, perhaps for use by the main gate guards.
Official Contact home page.