Launch date: Janurary, 2001 (unveiled); Never launched 

Fatal flaw(s): Too expensive to get to market

It's funny how a technology can be the darling of the consumer electronics press and then completely fall off the face of the planet. So it was with the DataPlay Disc. Unveiled at the 2001 Consumer Electronics Show, the mini-est of discs, capable of holding 500 mb of data, won a "Best of Show" award and managed to line up a number of deals with companies to make players and with studios and music companies to distribute content via DataPlay disc. Then it all went bust. Unable to bankroll such a large nationwide launch, DataPlay went bankrupt in 2002. Failure to launch, for real.