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Sam (Ted Danson) and Diane (Shelley Long), Cheers
Although considered by some as one of the landmark TV couples of all time, others took issue with Sam and Diane's on-and-off relationship for many reasons. Some said they dominated too much of what was supposed to be an ensemble comedy. Even the producers themselves said they were "a little tired of their shenanigans" as the years wore on. Fortunately, the haters got their way when, after leaving Sam and Boston for good at the end of Season 5, Diane returned in the series finale years later to become engaged to Sam again and break up with him again because they realized they were never meant to be together.