Police Squad: the Zucker Brothers’ seminal early TV series that introduced Leslie Neilson’s comic masterpiece Lt. Frank Drebbin. Everyone remembers it, despite there only having been six episodes (yes, really), and despite it having bombed massively when first shown.
Strangely, pretty much nobody remembers Sledge Hammer, despite it having been a considerable success in its day. Essentially a Dirty Harry pastiche, the series presented a terrific counterbalance to Miami Vice and all the other tacky 80s cop shows, in a way that nothing else did until McG’s Fastlane. Which, ironically, appears to have failed because people thought it was trying to be serious.