If prices of 3D TVs fall rapidly -- and assuming the glasses aren't too pricey -- 3D entertainment could have a future in the home. In addition to movies, gaming is another realm where 3D has potential. Sony plans to add 3D capability to its PlayStation 3 console. And you can bet that Microsoft and Nintendo have similar intentions for the Xbox and Wii too.

3D would give consumers a strong reason to buy Blu-ray players. As things stand now, Blu-ray's better picture isn't a compelling enough reason for many people to upgrade from DVD. Assuming that video streaming services (and home broadband connections) won't have the bandwidth -- at least not right away -- for 3D content, Blu-ray might have a golden opportunity to invade the living room.

So, will 3D be Blu-ray's killer app?

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