In a word: very good. I have no complaints about this movie. We get to see the loooong-fabled mysterious origin of Wolvering that even he himself could never remember, we see in the background the beginnings of a few other favorites, and now we know why Wolverine's hatred of Sabertooth is so instinctive.

All in all good to great (I'm not going to nitpick on if some semi-obscure X-men character is exactly the way he/she/it was in issue 48 or some such). I can definitely recommend this film.