Batman’s Pilot Episode
In 1994, the iconic actor Adam West released his book, aptly titled Back to the Batcave. Inside, he revealed that the original pilot episode for the show achieved “the worst score in the history of pilot testing”. While the average score for a pilot episode was typically in the 60s, this show was in the 40s.
Source: imged.com
So, the producers had to think out of the box and make adjustments. These changes included adding a narrator and laughter. Still, these changes in direction weren’t enough to boost the score after it was retested. So eventually, they added brand new special effects and the producers went from there.