Pan's Labyrinth is a very dark "fairy tale" or fantasy story. I did enjoy it, even though it was one of those pesky subtitled foreign films. Very imaginative story line, and I was totally engrossed until the end.
I do love dark fairy tales. Brother's Grimm is another one of those movies (though more Disney than this movie) which is in the dark fairy tale genre IMHO.
Again related to estrangements, step parents, children being shunned et. Really very well done. I would give this four and a half stars, and maybe five.