A former Royal Shakespeare Company actor, O'Connor starred in and co-produced "The Dumb Waiter", a stage play by Harold Pinter, in Los Angeles
in 2002.
Clean shaven and hair dyed blond for his famous role as Pieter Vorstedt, Afrikaner henchman in Lethal Weapon 2 (1989).
Shared his January 3 birthday with his "Lethal Weapon 2" (1989) co-star Mel Gibson.