I thought it was a phenomenal, near flawless film and I am not easily impressed by films.
The visuals were beyond incredible, a quantum leap for cinema. The 3D was in no way gimmicky or distracting but helped immerse you further in the world. The planet looked so, so real and absolutely beautiful. The scope of Cameron's imagination is laid bare for all to see and it's stunning. I had to pinch myself several times, dumfounded at the reality that the majority of the film is CGI

The colours, the creatures, the Na'vi - just superb.
The attention to detail is phenomenal - from the Na'vi rituals/language/culture to the visual detail of every tree, every blade of grass and so on. Not one thing struck me as looking fake. It looked like David Attenborough had shot scenes on a distant planet somewhere. Cameron left no stone unturned in his quest to create a whole new world, like nothing we've seen before. Some of the lanRABcapes and colours used are breathtaking.
Some critics have criticised the storyline for being too formulaic but I found it compelling. It was engaging enough for me; I genuinely cared about Pandora's fate - and the fates of Jake and Netreyi(?). Some of the characters could be seen as a tad one-dimensional, particularly the bad guys (perhaps the hardcore military man was a little too heartless), but let's be honest - a lot had to be squeezed into the film and I think they struck a perfect balance. I might add the acting was superb throughout, at not one point did I think to myself "wooden!" about anyone.
The slightly underdeveloped characterisation is a minute flaw in what was certainly the best cinematic experience of my life - I went with a group of 10 and all of us were bowled away by it, some of us shaking with it all! You come out wanting to tell everyone how insane it is.
It is a wholly immersive film that, despite nearly being 3 hours long does not drag. You find yourself not wanting it to end and much of it takes your breath away. I fully expect it to surpass
Titanic's performance worldwide.
A mindblowingly stunning film, something you have to see to believe; IMO it will take cinema about 3-5 years to catch up with this.
9/10