I've always been with Ebert on this one. It's well made, well acted, completely absorbing and intense. And yet, as he said, "the movie is against pedophilia, but what does it have to say about sadomasochism?" And the ending always sort of bothered me because the movie tried so hard to stay neutral, but it came down hard on Ellen Page's side in the final moments.

But those conflicting feelings about the movie's buried messages as a whole are part of the reason I still remember it vividly, probably six or seven years after I watched it. So kudos, movie.