Donna and I saw Serenity Friday night. I think its one of the best movies I've seen all year.
If you are a fan of the original Firefly series, you will LOVE this movie. If you like action movies, you will like this. If you like comedies, you will like this. If you like westerns, you will like this (only instead of horses think space ships).
I don't want to spoil anything for you if you haven't seen it. Let's just say it's a rollercoster ride and River kicks ass.