#7: Welcome Back, Kotter (1975-1979)
The 1970s TV show Welcome Back, Kotter left an indelible mark on television history with its iconic theme song and humorous portrayal of Gabe Kotter’s return to his high school alma mater. The show boldly explored the premise of a former student returning as a teacher, possibly pioneering the trope in sitcoms.

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Despite its initial acclaim, “Welcome Back, Kotter” gradually faded into obscurity. Still, its legacy endures through its cultural impact and fond memories shared by fans who remember its witty humor and unique premise, making it a notable entry in the annals of television history.