Robotics engineer Tomotaka Takahashi, an associate research professor at the University of Tokyo and creator of Japan's Robo Garage, asked himself a question:

"How does it look if many robots gather at one place and what will happen and how do we feel when we watch them?"

We now know this answer: It looks awesome; we will be psyched.

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In Tokyo Monday, Takahashi organized a performance of 100 of his small Robi robots doing a synchronized dance. The three-minute routine went flawlessly, as rows of the mini-bots stood, swayed and fist-pumped in unison, showing off their wide range of impressively smooth movements.

Robi is one of more than two dozen robots Takahashi designed. He said he used the one-foot-tall, two-pound humanoids for his project (which he named "100 Robi") to demonstrate that robots could be produced in large numbers at relatively low cost. Each Robi costs about $1,500.