Actually, the recent spate of 3D movies have been using a neat circular polarization trick that makes eyestrain and nausea less common than the old red/blue or vertically polarized systems. If you are a physics or optics geek, it's worth looking up. (an example) http://en.wikipedia.org/wiki/Real_D_Cinema
One fun side effect of this is that if you look at yourself in the mirror using the glasses for this type of 3D, each eye only sees the other eye, as mirrors flip circular polarization... (Try closing one eye at a time.)
Avatar did a lot of neat new stuff too, of course.
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Actually, the recent spate of 3D movies have been using a neat circular polarization trick that makes eyestrain and nausea less common than the old red/blue or vertically polarized systems. If you are a physics or optics geek, it's worth looking up.
(an example)
http://en.wikipedia.org/wiki/Real_D_Cinema
One fun side effect of this is that if you look at yourself in the mirror using the glasses for this type of 3D, each eye only sees the other eye, as mirrors flip circular polarization... (Try closing one eye at a time.)
Avatar did a lot of neat new stuff too, of course.