Judging by the crowds who showed up at the Smithsonian National Portrait Gallery this Presidents' Day weekend, Washingtonians were very exited at the idea of mixing art and wearable technology. I know I was. I must confess, when I first read about David Datuna's "Portrait of America" piece I didn't entirely grasp the concept. I just thought, ooh, cool, google glasses and art! Let's check it out. My husband and I I showed up at 11:15 on Sunday without even knowing that the Portrait Gallery only opened at 11:30. We entered on the G street Street side, slowly made our way to the line via a leisurely walk through the "Retratos: 2000 Years of Latin American Portraits" exhibit only to find out ...