When Firefly first aired, I didn't like the first episode, "The Train Job" much. The characterization was pretty poor. The second episode, "Bushwhacked", was better, but still meh. By the third episode, "Our Mrs. Reynolds", I was kinda dismayed and not giving it as much of a chance as I should and still thought that episode was meh at the time even though it was the first good episode. Then, FOX skipped a week for baseball, and I had kinda lost interest, so I missed the 4th episode and saw about 2/3rds of the episodes that aired after that. By the end of November, I was totally in love with that amazing show and not missing a week. Then it wasn't on for a couple weeks, so I went on the Internet to find out what happened and discovered it was cancelled.
Yeah, I'm not making that mistake again. "The Train Job" remains the worst episode of Firefly by far, with "Bushwhacked" in second.