Grumpy Old Geeks People John Hillerman Person John Hillerman 2 mentions in 1 episode John Hillerman is remembered for playing Higgins on Magnum P.I. Mentions 235: Facebooty Nov 13, 2017 1:54:55 Higgins, also known as John Hillerman, the sidekick on Magnum P.I. 1:55:16 farewell, John Hillerman, a.k.a. Higgins