On May 16th, there was an Event at the UW Nuclear Reactor! The building was decorated with balloons and a BBQ was held to celebrate the building. See the video on YouTube!
(The balloons were biodegradable, filled with air only - and were cleaned up on Saturday afternoon.)
On a sadder note, the infamous Ballard Restaurant (formerly Manning's Cafeteria, formerly Denny's, formerly a Seattle Landmark) is indeed slated for destruction in a contradictory declaration from the Seattle Landmarks Preservation Board on May 21st. Benaroya Companies (who owns the site) convinced the Board that it could not achieve a "reasonable rate of return" on its investment if the building was left standing.