There are more than a few of us out here that would love to see the series Firefly brought back (Brown Coats FTW!). However, with the with movie Serenity tying up many of the loose ends that the prematurely canceled series left open, bringing back the series would be difficult ... Unless you have total Ninja math skills.

 Saving Lives in Serenity: Can a Fanboy and Physics Change a Movie?