The only reason I can figure that "Hong Kong" seems never to have been rerun is that it was shot in black & white.
I was a junior in High School when it aired on ABC (1960-61)and I've never seen it since. But "Hong Kong" left a lasting impression and I would love to see it again.
I'd been vaguely aware of Rod Taylor from some earlier TV appearances and had liked him in "The Time Machine", but it was "Hong Kong" that made me a fan (for life). The show had a wonderful look and feel to it, a real sense of place (despite the fact most of it was shot on the FOX lot).
To me, at seventeen, the show seemed wonderfully sophisticated and exotic. Rod Taylor (half the time in a white dinner jacket) made for an elegant and intelligent yet muscular hero - a variation on James Bond two years before "Dr. No".
I especially remember the music. Lionel Newman's work on "Hong Kong" was superb, as were all facets of the production for its day. The supporting cast, including Lloyd Bochner and Jack Kruschen, was uniformly excellent.
They thought back then at ABC and 20th-TV that it might be a blockbuster, their "Wagon Train" (NBC). Perhaps on another network it might have (ABC just didn't have the station lineup to compete). And if they'd shot it in color, it might now be considered a rerun classic.
rvc