We absolutely loved watching this movie in IMAX! The sound and the cinematography were amazing! Loved the story line and thought the casting was spot on! We've seen it before in the theatres when it came out originally and bought the DVD shortly thereafter but when we got the chance to see it again in IMAX, well, there's just nothing that compares with this experience.
I've seen it twice now - in 3D - which I would recommend. It's the wave of the future and we're all riding high. This is a wonderful film that truly gives the audience the impression of flying when Hiccup and Toothless start soaring. The only question I had was why weren't Hiccup and his Viking girlfriend freezing to death while flying high above the clouds at night? At a 5 degree drop in temperature for every 1,000 feet in altitude, they should have been sporting icicles upon touchdown. All in all, a wonderfully done film and I really liked Toothless and his expressive eyes.