Ars Technica's review was summed up after some negative points with "So, why do I think this movie rocked? Well, first of all, there's the simple continuation of the mythology. I don't think it would have taken too much for this movie to be cool. If it had done nothing but explain the back-story, without adding anything of substance, I probably still would have loved it. Luckily that wasn't all I had to work with."
Yeah, I rely on Ars Technica for movie reviews just like I rely on Jar-Jar not to vote with the Dark Lord of the Sith.