Listed below are some of the technologies which I think ahead of it's time...
Even though they are not so popular today, I am sure they are going to be the leads for tomorrow.
1) Riya - An image recognizing web search which even challenges Google’s newly acquired Neven Vision. With Riya you can hunt for similar faces and objects on any images across the web and also refine the results, using color, shape and texture. http://www.riya.com
2) SteadyMove - 2d3's fully automatic video stabilization plug-in for Adobe's and Discreet all editing softwares. Its ideal for DV users, this low-cost solution is the perfect way to give handheld shots a production quality finish. Incorporating 2d3's unique tracking technology; SteadyMove calibrates and re-renders video footage with no further intervention necessary. http://www.2d3.com
3) Canesta – Canesta’s electronic perception technology provides a giant leap forward in this regard by providing a low cost method for devices to sense and perceive their surroundings. Cars could better detect and potentially avoid accidents. Security systems could better understand their surroundings, reducing false alarms and making them more effective. Computers and videogames could see their users’ gestures and body movements. The applications are endless. http://www.canesta.com