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Happy 35th Anniversary, 'Magnum, P.I.': 20 Things You Didn't Know About the Classic Tom Selleck Drama

From the car to the theme song to the Hawaiian shirts to the Tigers cap to the mustache, the most glorious mustache in all of primetime TV history… There is much to love about Magnum, P.I., the beloved CBS drama that debuted 35 years ago this week and gave us so many gifts that keep on giving — namely star Tom Selleck, and those aforementioned lip whiskers. Here are 20 things you should know to celebrate Magnum’s anniversary… eh, make it 21: The Magnum, P.I. theme was written by TV theme song gu