@megatron2050, yes I was able to enjoy the HD trailer online, but then applied for those free 3D Imax previews and received four tickets. To me the Imax---whetehr 3D or not will be amazing on the screen that size and hearing the soundtrack with 12,000 watts of power is jaw dropping. I have thought it would be so cool to have your very own Imax. Oh, btw---they checked your ID with the email confirmation and if it didn't match then you were not allowed in...at least at the Imax we were at. From my perspective I really enjoyed the 3D Experience (but I would have to believe that those 3d glasses can be a pain in the butt for those with perscription glasses...anywho---I will even go see this in the Imax in 3D, now in reference to my better half (my bride)---she did not like the 3D effect---said it was more distracting than enjoyable...not that she didn't like the preview---she, being a non-sci-fi fan ususally avoid these movies but she really liked what she saw and is willign to go see it. IMO---this movie will be super immersive just in the shear visual and other world exeperience, but not everyone will like it. I do like how Cameron is testing the waters with audiences around the world to see/hear about the 1st impressions and then they have plenty time to make adjustments.