I've never seen a film look like this one did in IMAX. Usually, they just take the 35mm print and stretch it, but large portions of this film were shot with IMAX cameras. It cheesy to say it, but if you only see 1 movie all year, it has to be Dark Knight:IMAX.
When first watching this, you're just hanging on for the ride. The second time, you'll be able to enjoy the dialogue much more. It's like "Miller's Crossing" in that sense. Wowsers!