Saw it in Imax and was blown away, as I knew it would be. So much details so many things filling your frame of vision. Incredible experience. It's as close as I'll ever come to seeing it as it was intended.
When I realized I'd never see it again in that manner -- I saw it AGAIN a few days later in Imax before the run ended.
One thing it did bring home is how ill mannered and ADD rattled most people are in movies. There are long stretches of silence. Dead silence. It requires you to WATCH not talk. I could hear adults whispering, asking and commenting. I rarely notice this in most movies these days since everything is filled with explosions or Zimmer-esque wallpaper music and you aren't required to really WATCH the screen and pay attention. Sorry, rant over.