When I was in grad school, an old college friend asked to crash at my Boston apartment. She was a huge Joss Whedon fan, and the East Coast had several advanced screenings for Serenity, the movie based on his short-lived sci-fi TV series, Firefly. I'm always happy to help a friend, so I told her I'd gladly host her for the night. And then she told me she had a second ticket.
My pal knew I'd never seen the series, but I didn't tell her why I hesitated so long when she invited me along. Basically, I tried to watch Firefly when it first aired, but I didn't especially like the pilot. Then, I saw the next episode and tuned in early enough to catch the theme song - which I thought was so awful that it had me laughing hysterically.
Music is pretty important to me, and Whedon's new series lost me from the get-go. Even more, between the setting and the song, I suddenly got very predictive about the show, (accurately) guessing that there would be a space cotillion, a space saloon fight, a space train robbery, and a space whorehouse. What I couldn't predict was that I would realize I was horribly wrong in my judgment. Firefly was terribly well-written and -acted.
I couldn't find the opening credits video, but it's lots of pictures of the cast, and the final shot is a ship flying over a herd of running horses.