Liquid Nitrogen And 1500 Table Tennis Balls Science Experiment

This video was published by Plymouth University in August, but the video has only gone viral now. It is showcased on Fark, CNet, io9, and DVice. 

Dr Roy Lowry demonstrates the amazing force and power liquid nitrogen possesses, and uses the built up pressure of the element to launch 1,500 ping-pong balls into the air. 

Update: the video is down, but this is the same concept on Ellen.