50 years ago tonight, the pilot movie for Cannon premiered on CBS. William Conrad's rotund detective may not get the critical or popular love that a character like Columbo does, but give him credit: The series proper premiered Fall 1971 and went on for 5 seasons and 122 episodes, a great run.
The show still doesn't get much respect. Yes, it had a high-profile run on TV Land when that channel launched...but the promos often mocked Frank Cannon's size:
Yes, the complete series is on DVD, but CBS licensed it out to VEI, which issued a set that, whole complete and lacking major problems, is workmanlike and unrestored. You can judge whether that's actually appropriate for the series.