Originally published on http://mashable.com/2015/01/20/humanoid-robots-dance-tokyo/?utmcampaign=Mash-Prod-RSS-Feedburner-All-Partial&utmcid=Mash-Prod-RSS-Feedburner-All-Partial&utmmedium=feed&utmsource=feedly&utm_reader=feedly One hundred humanoid robots performed a synchronized dance routine in Tokyo on Monday. Each of the one hundred 'Robi' robots weighs just 2.2 pounds and stands just a little over a foot tall. The '100 Robi' project is the brainchild of Tomotaka Takahashi of Tokyo University.