9 of 12Image
Ahh, the Furby. Something I remember well from my childhood. While the fluffy 'robotic' toy was reactive and incredibly well formed for its time, they were sold in absolute mass. But demand soon became frustration as nobody could seem to get one. Only one kid at school managed to get one for the Christmas holiday, and the rest of the class hated them for it.
The Furby's demand alone caused so many fights and arguments in families across the world. Demand was so high, and only 30 million devices were sold, that many were left disappointed and angry. The Furby soon became one of the most hated products of the late-'90's because practically nobody could get one.
I eventually got one for my 18th birthday -- nearly ten years late.