When Firefly came out I was put off at the thought of watching a space western. I guess a lot of people felt that way because the series only lasted half a season.
But after watching it on DVD, I was amazed by the great mix of humor, action, drama that Joss Whedon packed into these 13 or so episodes. It's not like anything you've ever seen on television and probably nothing you'll see in the forseeable future.
I dare you not to fall in love with each of the characters in Firefly. A fantastic show that should have been given a chance to bloom.