Actually, it looks from the preveiws as though Serenity
may be a retelling of at least parts of the Firefly
story. I seem to remember that whole "do you want to run this ship... Well, You can't!" Dialogue from the TV series. Also the talk about Serenity's 'new' crew member being more than she seems...
It's gonna be great anyway you look at it though, Joss Whedon is Da Mang.