If you've ever wondered where Hanna-Barbera got at least an inspiration for their 1973 series, Inch High Private Eye, look no further than Videocraft (Rankin-Bass), which came up with the spy spoof, Tom of T.H.U.M.B. as a backup feature on King Kong in 1966. In fact, Tom may be meant to sound like a parody of Maxwell Smart (Get Smart), although the actor doesn't quite have Don Adams' vocal inflections down pat. The animosity between Tom and his boss is similar to that of Inch and his exasperated boss, Mr. Finkerton, 7 years later.
Dandydeal uploaded the following episode, which also includes a King Kong interstital leading to the Kong adventure that would follow.....
To these jaded eyes, most spy parodies now seem all the same.