3D cinema and television

We were discussing today how does the 3D technique work in current cinematic releases.
As Liming pointed out, the company Real3D appear to have the monopoly on this at the moment. I was always quite sure that the technique of presenting two separate images to each eye involved light polarisation - the projector rapidly switching between the left eye and the right image being projected by applying plane-polarised light in different orientations, then counter-filtered passively by the different lenses on the glasses
I was right, sort of. The light is indeed differentially polarised, but not plane- or linear-polarised. It is circularly polarised, the physical description for which is described in Wikipedia here. Although I can't quite follow this from the description, I think I get it in principle. One of the key benefits is that apparently you can tilt your head and have the 3D effect retained, which doesn't work with linear-polarised light.
And also apparently, the effect of bouncing the light off the cinema screen doesn't significantly affect the polarisation physics either.

For 3D TV, a quick glance doesn't reveal what the 'standard' display technique will be. It seems there are two options under development - one requiring special shutter glasses (left and right eye lenses conversely open and close in quick succession), which just seems like a bad idea to me (surely the glasses will be too expensive, and will somehow have to be synchronised to the display?), and the polarisation technique, which I would assume naively to be compatible with the Real3D cinematic method - in other words I would guess you'd be able to use the same circular-polarised glasses that you got from seeing Avatar, etc.
I'm happy to be corrected on this point, but please provide a reference!

FWIW, there are at least 6 other methods for 3D viewing (especially for static images - not cinema and TV):
1. Sterescopic: This is the prismatic lens method in which two physically-separated images are presented to each eye. Some people (including me!) can sometimes even fuse the two side-by-side images by making oneself go cross-eyed while looking at them. You can even make these yourself with a standard camera if you know how...
2. Analglyph: this is the red-green glasses technique
3. Random dot stereograms: can use either of the above techniques, but allow for shapes to be revealed from patterns of dots.
4. Autostereograms: Like random dots, but within the one printed image. This is the so-called "Magic Eye" technique that was popular in books in the 90s.
Here's a reference to one that I helped make a couple of years ago...
5. Wiggle-grams: Two images (or more) put together in an animated image to produce a rotation effect. Not true stereoscopy.
6. Lenticular: A grating effect to present two (or more images by titling the subject (or the viewer) at different angles. This is commonly used in novelty cards stuck in cereal boxes, etc., where you tilt the card to see different images appear, or produce pseudo-animation. Also not true 3D.