This was a really good movie. The story - based on the novel of the same name - was heartbreaking, the acting was very very good (so good that you forgot it was acting), but the best part was that it was cinematographically innovating. The camera angles were interesting, and the first-person perspective it offered (except in moments of flashbacks) was very interesting indeed.
So yes, I liked this movie. And I can see why the director won a Palme d'or at the Cannes movie festival; he has an excellent, innovative vision.
A little warning, though: at one point, the guy's eyelids have to be sown shut, and since it happens during a first-person perspective moment, people who are squeamish about such things will definitely be uncomfortable.