The invention of the quartz watch in the 1960s, which ran on electricity and kept time with a vibrating quartz crystal, proved a radical departure for the industry. During the 1980s quartz watches took over the market from mechanical watches, an event referred to as the "quartz crisis". Although mechanical watches still sell at the high end of the market, the vast majority of watches now have quartz movements. Here are five extremely cool watches that geeks would love. Click here to view the first image in today's viral picture gallery. Continue reading for a viral video of aug(de)mented reality.