4. Cop Rock (1990), 11 episodes
Launching about a month after a musical TV series set at a high school (...hey... naw, it'll never catch on), this particular show, with an impressive pedigree, premiered to what The Simpsons once described as "angry yawns" in 1990. I'm truly baffled as to how anyone thought this should would be a success. Did they really think that inside every fan of police procedurals there was a fabulous Broadway fan just waiting to come out? How did they think this premise would sustain itself? Why did this even get to the pilot stage, much less get onto the air? These are questions humanity must answer if we are to learn from this mistake.