It all depends... there'll be a huge blitz of 3D-ready TVs... probably in the summer or before Christmas.
If you want a rear-projection TV with the whole quick-to-die bulbs and such -- it's good now. The big LED-LCD TVs will be coming shortly... CES had several of them... including an LG LEDTV that has backlit LED.
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To explain why the eye only needs Red Green and Blue light to see all colours -- is because our eye can only see Red, Green, and Blue.
Here is a picture of the full spectrum of light... and what the "Red detector" can see... what the "Green Detector" can see... and what the "Blue Detector" can see. (The thin black line is how our perceives brightness, not colour... so it's useful for like... nightvision and edge/detail detection)
As you can see... Yellow light causes both Red and Green retina nerves to respond. So technically... firing a red photon and a green photon at two adjacent red and green retina nerves... will produce the same response as two yellow photons... one hitting a red, one hitting an adjacent green.
So how can your eye tell the difference? It can't!
A side note -- the red and green overlap a lot... the more those two receptors overlap in response... the more red/green colourblind the person will be. Why? Well if the red sensors and the green sensors both respond exactly the same to any given photon... a green sensor can see a red photon and a red sensor can see a green photon. Colourblind.
(The guy the picture was modeled after was probably slightly colourblind... but that's just a guess).
Red/Green/Blue Colour isn't some Physics-given... it's just how our brain works. It sees how close a photon is to either Red, Green, and/or Blue... and then says "Well it's halfway between red and green... so it must be yellow".
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