The jacket that Colonel Chessbridge wears during the "briefing" scenes (black with white trim) is nearly identical to the jacket worn by Number 6 in "The Prisoner" (1967). That series is a pseudo-sequel to "Secret Agent" (1964) also known as "Danger Man".
the main title scene from Season 1 of "Danger 5" is a direct parody of the one from "Destroy All Monsters" (the "solid gold" text in the original Japanese version)