Just got back from seeing it. I enjoyed it. It's a solid Judge Dredd movie, much closer to the flavor of the comics - it's not for kids. I'm pretty sure the R is just for the blood and violence (it's pretty gory in a couple of small bits, and I'm not sure its satire). It will help erase the previous celluloid version, if you were contaminated by it. Karl Urban is pretty good at Dredd. I saw it in 3D and it was decent (i'm not really a fan of the 3D stuff), but only really effective in a few scenes, but I think it helped in those (when people are on the drug). I really liked this version of Mega City One: craptacular urban area with big arcology-type complexes that hold 80,000 people. But there's still a sun and the city has daylight (from the earlier movie, you'd think it was all underground except for the Cursed Earth bits).