Serenity was my favorite, yea I just saw it after it came out on DVD around Dec. 20th so maybe it's just the best freshest movie on my mind, but... I have to say that I've never seen one single episode of the Firefly series so the characters and everything was all new to me.
What I find so great about this movie though is that it proved to me that you can still sit down and enjoy a PG-13 movie without all of the vulgar language, sex and all the other Rated-R features you've come to expect this day and time. I have nothing against a movie that's full of those things, it's mostly what I watch. Since watching the movie I was told about the Firefly series, I watch the Sci-Fi channel often but have never seen it, now I'll be on the lookout for it.