Grumpy Old Geeks Media Magnum P.I. Media Magnum P.I. 2 mentions in 1 episode Magnum P.I. is the television show in which John Hillerman played Higgins. Mentions 235: Facebooty Nov 13, 2017 1:54:55 the sidekick on Magnum P.I. 1:55:16 I grew up on Magnum P.I.