I bought the Firefly DVD set the other day. Rather than making me happy, watching this cancelled series simply made me angry and upset that I'll never get to watch the full story unfold. There's a Firefly movie coming out, but movies don't go as deep as a tv series.
They also cancelled Futurama. I loved that show too. I didn't get to watch as often as I'd like because its timeslot was constantly moving or pre-empted for sports, but it was a solidly funny show.
There is so much crap on television, and yet they cancel the shows I love.
Fox television, you suck.