It just came on TV here in the UK where I live. I watched it in 2D on a largish screen in my house. I do have very good sound quality but it is stereo, not surround sound. It probably would have been better if I'd watched it in a cinema. I think a film like this is probably at its best in 3D in a cinema as it is a big FX type of a thing.

Avatar borrows from many other stories I have either seen in film or read. It is a reasonably well constructed story but the biggest problem was that once the environment and basic ideas had been established, from then on in it was utterly predictable with only one smallish unexpected development.

I thought that the vegetation on the planet had the colour scheme of 1980s discotheque interior. The humanoid-ish inhabitants looked a bit computer generated, and then there was "unobtainium", I mean really.

So, after the first hour or so the rest of it is rather boring.