#14: Dear John (1988-1992)
The groundbreaking 1980s sitcom Dear John showcased a novel premise: a divorced man leading a self-help group. Its humor and progressive ideas were ahead of their time, making it both beloved and misunderstood.
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Despite gaining popularity, ‘Dear John’ couldn’t overcome its unconventional theme of divorce, which many found too controversial for television in that era. Its decline in ratings led to the cancellation, relegating it to a footnote in TV history.