I thought it was a terrific movie: at least as good as Tangled (which I enjoy immensely, and which I think is the best apples-to-apples comparison to be made).
Comparing it to the movies mentioned by @
luv, the music from Beauty and the Beast and the Little Mermaid is probably more memorable than the songs from Frozen and I would argue that Beauty and the Beast has a better-developed and paced plot, but the quality of Frozen's animation (e.g., perfectly-synchronized audio and no disappearing-reappearing aprons or spontaneous statue facial restorations), its stunning visuals and deft insertion of laugh-out-loud moments of levity was certainly far superior to its hand-drawn ancestors. I also appreciated that the film had at least as much to do with the relationship between two sisters as it did a woman's search for true love.
The immersive feel of Frozen's "environment" was also really cool. I've been to the fjords of Norway in winter, and I live in the Finger Lakes area of Upstate NY, which has some similar, albeit less dramatic, topography. The landscapes of Frozen felt very true to Scandinavia and very familiar at the same time, and really resonated with me.
