"This movie shouldn't have been made." A quote from the Director Joss Whedon. After the cancellation of the tv series Firefly, the fans and cast and crew lobbied to have the show continued, in the end Serenity was made.
This movie continues on a little while from where the TV series left off. There are no big names in it (Adam Baldwin is no relation to the Baldwin brothers). You'll notice that the movie seems to be about three tv series seamlessly melded into the 188minute long movie. No large budget, but this movie is a hit. The acting is great, the direction great, and the plot is solid.
See this movie if you like Star Wars or westerns. But try and see the TV series first. This will give you a better feel for the characters and the 'verse.
Uh...had a slight weapons malfunction. But, uh, everything's perfectly all right now. We're fine. We're all fine here, now, thank you. How are you?