We saw the movie Serenity last Sunday. I'm a fan of the Firefly Science Fiction television series, so this was a fun movie. I give it a B+ for fun. A couple of the fights were over long, but a good time was had by those what didn't die.
The NY Times says, It probably isn't fair to Joss Whedon's "Serenity" to say that this unassuming science-fiction adventure is superior in almost every respect to George Lucas's aggressively more ambitious "Star Wars: Episode III - Revenge of the Sith." But who cares about fair when there is fun to be had?