It really is that good. Saw it last night and I loved it. Pacific Rim is one of those rare beasts that is exactly the logical progression of an older (fun) premise taken to new heights with contemporary ideas and technology.
The best comparisons to this I can really make from recent movies are Drive and Moonrise Kingdom from the last two years. They were both movies out of time, respectively an '80s-style action movie with a romance subplot and a story of two kids in the '60s running off from their parents and the law to be together, both made with such care as to remind people that we didn't just love the older and hokier versions due to nostalgia. Pacific Rim has that much care and that much heart, but is instead a goddamn monster-versus-robot smackdown where everything you always had to imagine in a 'what if this was real' way from all the Gundams and Power Rangers and Evangelions etc. actually happened in a fully fleshed out way and was as glorious as you could have hoped.
The best comparisons to this I can really make from recent movies are Drive and Moonrise Kingdom from the last two years. They were both movies out of time, respectively an '80s-style action movie with a romance subplot and a story of two kids in the '60s running off from their parents and the law to be together, both made with such care as to remind people that we didn't just love the older and hokier versions due to nostalgia. Pacific Rim has that much care and that much heart, but is instead a goddamn monster-versus-robot smackdown where everything you always had to imagine in a 'what if this was real' way from all the Gundams and Power Rangers and Evangelions etc. actually happened in a fully fleshed out way and was as glorious as you could have hoped.