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Out of spite, Endora casts a spell that will make everyone hate and despite her son-in-law, Darrin. Unable to undo the spell, Samantha tries to set things right by giving Endora a taste of her own medicine. But Darrin, unaware that the spell is about to be lifted, nearly gums up the works with a boneheaded strategy of his own. Written by Jack Sher, "No More Mr. Nice Guy" originally aired on March 23, 1967, as the 100th episode of Bewitched.