Fan campaigns can be a powerful thing, and one of the most successful ones came in the form of the 2005 film "Serenity," which served as a follow-up to the cancelled-too-soon Joss Whedon series, "Firefly." Long before the cries for a "Snydercut" ever hit the internet, there was a fan movement to get answers following the cancellation of "Firefly" after only one season. Unlike the fan campaign that managed to get "Star Trek" back on the air after a wobbly first season in the 1960s, the...