BSG had the spin-off Caprica that I thought had some potential, blurring the line between reality and cyberspace. That series ended even more poorly than BSG. Guess the writers had no heart to write a meaningful finale.
On Firefly, I bought the series and Serenity movie, which I tend to watch almost every year. I too wonder why it was canceled. The casting was perfect and the story lines were rich and varied.
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