Interactive Ping Pong Table/Virtual Aquarium.

Craig Wisneski, Julian Orbanes, Ben Chun and Professor Hiroshi Ishii from MIT were quite busy. Ten years ago, they created PingPongPlus, an enhanced version of the classic game that "features a "reactive table" that incorporates sensing, sound, and projection technologies. Projectors display patterns of light and shadow on the table; bouncing balls leave images of rippling water; and the rhythm of play drives accompanying music and visuals."

Don't believe this amazing feat was accomplished in the 1990s? Check out this video...in RealVideo format.

Or just watch it here: